Can computers really mark exams? Benefits of ELT automated assessments

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Automated assessment, including the use of Artificial Intelligence (AI), is one of the latest education tech solutions. It speeds up exam marking times, removes human biases, and is as accurate and at least as reliable as human examiners. As innovations go, this one is a real game-changer for teachers and students. 

However, it has understandably been met with many questions and sometimes skepticism in the ELT community – can computers really mark speaking and writing exams accurately? 

The answer is a resounding yes. Students from all parts of the world already take AI-graded tests.  and Versanttests – for example – provide unbiased, fair and fast automated scoring for speaking and writing exams – irrespective of where the test takers live, or what their accent or gender is. 

This article will explain the main processes involved in AI automated scoring and make the point that AI technologies are built on the foundations of consistent expert human judgments. So, let’s clear up the confusion around automated scoring and AI and look into how it can help teachers and students alike. 

AI versus traditional automated scoring

First of all, let’s distinguish between traditional automated scoring and AI. When we talk about automated scoring, generally, we mean scoring items that are either multiple-choice or cloze items. You may have to reorder sentences, choose from a drop-down list, insert a missing word- that sort of thing. These question types are designed to test particular skills and automated scoring ensures that they can be marked quickly and accurately every time.

While automatically scored items like these can be used to assess receptive skills such as listening and reading comprehension, they cannot mark the productive skills of writing and speaking. Every student's response in writing and speaking items will be different, so how can computers mark them?

This is where AI comes in. 

We hear a lot about how AI is increasingly being used in areas where there is a need to deal with large amounts of unstructured data, effectively and 100% accurately – like in medical diagnostics, for example. In language testing, AI uses specialized computer software to grade written and oral tests. 

How AI is used to score speaking exams

The first step is to build an acoustic model for each language that can recognize speech and convert it into waveforms and text. While this technology used to be very unusual, most of our smartphones can do this now. 

These acoustic models are then trained to score every single prompt or item on a test. We do this by using human expert raters to score the items first, using double marking. They score hundreds of oral responses for each item, and these ‘Standards’ are then used to train the engine. 

Next, we validate the trained engine by feeding in many more human-marked items, and check that the machine scores are very highly correlated to the human scores. If this doesn’t happen for any item, we remove it, as it must match the standard set by human markers. We expect a correlation of between .95-.99. That means that tests will be marked between 95-99% exactly the same as human-marked samples. 

This is incredibly high compared to the reliability of human-marked speaking tests. In essence, we use a group of highly expert human raters to train the AI engine, and then their standard is replicated time after time.  

How AI is used to score writing exams

Our AI writing scoring uses a technology called . LSA is a natural language processing technique that can analyze and score writing, based on the meaning behind words – and not just their superficial characteristics. 

Similarly to our speech recognition acoustic models, we first establish a language-specific text recognition model. We feed a large amount of text into the system, and LSA uses artificial intelligence to learn the patterns of how words relate to each other and are used in, for example, the English language. 

Once the language model has been established, we train the engine to score every written item on a test. As in speaking items, we do this by using human expert raters to score the items first, using double marking. They score many hundreds of written responses for each item, and these ‘Standards’ are then used to train the engine. We then validate the trained engine by feeding in many more human-marked items, and check that the machine scores are very highly correlated to the human scores. 

The benchmark is always the expert human scores. If our AI system doesn’t closely match the scores given by human markers, we remove the item, as it is essential to match the standard set by human markers.

AI’s ability to mark multiple traits 

One of the challenges human markers face in scoring speaking and written items is assessing many traits on a single item. For example, when assessing and scoring speaking, they may need to give separate scores for content, fluency and pronunciation. 

In written responses, markers may need to score a piece of writing for vocabulary, style and grammar. Effectively, they may need to mark every single item at least three times, maybe more. However, once we have trained the AI systems on every trait score in speaking and writing, they can then mark items on any number of traits instantaneously – and without error. 

AI’s lack of bias

A fundamental premise for any test is that no advantage or disadvantage should be given to any candidate. In other words, there should be no positive or negative bias. This can be very difficult to achieve in human-marked speaking and written assessments. In fact, candidates often feel they may have received a different score if someone else had heard them or read their work.

Our AI systems eradicate the issue of bias. This is done by ensuring our speaking and writing AI systems are trained on an extensive range of human accents and writing types. 

We don’t want perfect native-speaking accents or writing styles to train our engines. We use representative non-native samples from across the world. When we initially set up our AI systems for speaking and writing scoring, we trialed our items and trained our engines using millions of student responses. We continue to do this now as new items are developed.

The benefits of AI automated assessment

There is nothing wrong with hand-marking homework tests and exams. In fact, it is essential for teachers to get to know their students and provide personal feedback and advice. However, manually correcting hundreds of tests, daily or weekly, can be repetitive, time-consuming, not always reliable and takes time away from working alongside students in the classroom. The use of AI in formative and summative assessments can increase assessed practice time for students and reduce the marking load for teachers.

Language learning takes time, lots of time to progress to high levels of proficiency. The blended use of AI can:

  • address the increasing importance of formative assessmentto drive personalized learning and diagnostic assessment feedback 

  • allow students to practice and get instant feedback inside and outside of allocated teaching time

  • address the issue of teacher workload

  • create a virtuous combination between humans and machines, taking advantage of what humans do best and what machines do best. 

  • provide fair, fast and unbiased summative assessment scores in high-stakes testing.

We hope this article has answered a few burning questions about how AI is used to assess speaking and writing in our language tests. An interesting quote from Fei-Fei Li, Chief scientist at Google and Stanford Professor describes AI like this:

“I often tell my students not to be misled by the name ‘artificial intelligence’ — there is nothing artificial about it; A.I. is made by humans, intended to behave [like] humans and, ultimately, to impact human lives and human society.”

AI in formative and summative assessments will never replace the role of teachers. AI will support teachers, provide endless opportunities for students to improve, and provide a solution to slow, unreliable and often unfair high-stakes assessments.

Examples of AI assessments in ELT

At app, we have developed a range of assessments using AI technology, including , aimed at those who need to prove their level of English for a university place, a job or a visa. It uses AI to score tests and results are available within five days. 

Read more about the use of AI in our learning and testing here.

Explore our courseware and exams

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    Content and Language Integrated Learning (CLIL) is an approach where students learn a subject and a second language at the same time. A science course, for example, can be taught to students in English and they will not only learn about science, but they will also gain relevant vocabulary and language skills.

    It’s important to note that CLIL is not a means of simplifying content or reteaching something students already know in a new language. CLIL courses should truly integrate the language and content in order to be successful – and success is determined when both the subject matter and language is learned.

    Who is CLIL for?

    CLIL can work for students of any age, all the way from primary level to university and beyond. So long as the course content and language aims are designed with the students’ needs in mind, there is no limit as to who can benefit from this teaching approach. However, it is most commonly found in primary and secondary school contexts.

    What are the main benefits of CLIL?

    Many teachers see CLIL as a more natural way to learn a language; when a subject is taught in that language there is a concrete reason to learn both at the same time. And as students have a real context to learn the language in, they are often more motivated to do so, as they can only get the most of the content if they understand the language around it.

    Moreover, being content focused, CLIL classes add an extra dimension to the class and engage students, which is especially advantageous in situations where students are unenthusiastic about learning a language.

    CLIL also promotes a deeper level of assimilation, as students are repeatedly exposed to similar language and language functions, and they need to produce and recall information in their second language.

    Furthermore, it has the advantage that multiple subjects can be taught in English, so that students’ exposure to the language is increased and their language acquisition is faster.

    CLIL also encourages students to develop 21st century skills, including the ability to think critically, be creative, communicate and collaborate.

    What are the challenges of CLIL?

    As CLIL is subject-focused, language teachers may also have to develop their own knowledge of new subjects in order to teach effectively.

    They must also structure classes carefully so that the students understand the content of the lesson, as well as the language through which the information is being conveyed.

    And when it comes to classroom management, educators need to be very aware of individual student understanding and progress.

    It’s therefore important to consistently concept check and scaffold the materials to be sure both the language and content are being learned.

    How can you apply CLIL to your class?

    It’s important to have a strategy in place when applying CLIL in your courses. One of the key things to remember is that the language and subject content are given equal weight and that it shouldn’t be treated as a language class nor a subject class simply taught in a foreign language.

    According to Coyle’s 4Cs curriculum (1999), a successful CLIL class should include the following four elements:

    • Content – Progression in knowledge, skills and understanding related to specific elements of a defined curriculum
    • Communication – Using language to learn whilst learning to use language
    • Cognition – Developing thinking skills which link concept formation (abstract and concrete), understanding and language
    • Culture – Exposure to alternative perspectives and shared understandings, which deepen awareness of otherness and self

    Using a number of frameworks can help you prepare your lessons and make sure activities are challenging yet achievable for your learners.

    Bloom’s Taxonomy, for example, classifies learning objectives in education and puts skills in a hierarchy, from Lower Order Thinking Skills (LOTS) to Higher Order Thinking Skills (HOTS).

    In the diagram below, you can see the levels increasing in complexity from the base up to the triangle’s peak.

  • A group of students hugging a teacher

    How to use praise to motivate your students

    By Joanna Wiseman
    Reading time: 3 minutes

    Praise in the classroom is a valuable resource that every teacher has in their toolbox.It can encourage struggling students and reward learners who have been studying diligently and working hard on their language skills.

    But not all types of praise have the same effect. Let’s take a look at different types of praise and how you can use it to boost your learners’ motivation andself-esteem.

    Different types of praise in the classroom

    There are three types of praise that teachers commonly engage in - but they’re not all equal and are not all desirable:

    • Personal praise: Here you praise a student for a specific ability or quality. For example, you might say something like,“You have a great memory for vocabulary”.
    • Effort-based praise: Thisis when you comment on a student’s efforts. For example, you could say,“I can see you tried really hard with this vocabulary homework – well done.”
    • Behavior-based praise:This type of praiseis where you comment on how a student is acting, an example would be,“You were really paying attention during the vocabulary lesson – good job.”

    So how – and when – should we use these types of praise in the classroom?

    Try not to praise ability

    The first type of praise – personal praise – should be avoided in the classroom.has shown that this type of praise doesn’t have a beneficial effect on motivation.

    In fact, praise for intelligence actually has a detrimental effect on student achievement. When students were praised for their intelligence, they tended to care more about their performance goals – the score they achieved on a test, for example. Learning goals, like mastering a new skill, became less important to them.

    Moreover, personal praise has been shown to undermine student resilience in the face of failure. Students showed less persistence when it came to challenging tasks and less enjoyment of the challenge. They also performed more poorly than children praised for effort.

    Furthermore, when you praise students for their ability, they also tend to see intelligence or aptitude as a fixed trait. However, students who are praised for effort are more likely to see ability as something they can improve on. This feeds into the development of a growth mindset vs a fixed mindset.It’s important toinstilla growth mindset in learners to enable them to reach their full potential.

    How to praise effort and behavior

    When it comes to praising effort and behavior, what’s the most effective way to do it? Here are some techniques to employ:

    1. Be specific

    General praise such as “Good job” isn’t nearly as effective as a comment that shows you’ve been paying attention to what the student is doing. A precise compliment will make a much bigger impact on a student, for example:“I was really impressed at how hard you concentrated during the listening exercise. Well done.”

    2. Give praise in the moment

    Immediate praise doesn’t need to be disruptive, but it shows students that you are paying attention and noticing good behavior and effort.

    3. Avoid comparisons with other students

    Instead of saying, “You got the best mark in the class – well done!” say something like,“You got a really high score in the reading test. Your hard work has really paid off this term.”

    4. Keep track of praise

    Before your class, choose three or four students you’re going to praise that day. That way, you can be sure that each and every student will benefit from the motivational power of effective classroom praise!

    5. Personalize your praise, depending on the student

    Young students enjoy being praised publicly, but shy students, older children and teenagers prefer positive feedback to be given quietly.

    Don’t overpraise and watch your positive bias

    It’s important to be sincere. Older children, especially adolescents, have an extremely low tolerance of insincerity. So, don’t be tempted to praise students too often, or too effusively – it can actually have a negative impact on your relationship with your whole class. Insincere praise can lead students to question your judgement.

    It’s also really important to be aware of your positive bias.that teachers consistently give students of color more positive feedback on their work. It’s done with good intentions, but it can actually be harmful. If you regularly overpraise students for minor achievements, it can imply that you have low expectations for these students. And, this can make your students feel like they might not be capable of fulfilling the high expectations that you should have of them.

    So, instead of overpraising, focus on giving specific, immediate praise to motivate your students, boost theirself-esteem and unlock their potential.

  • A class of students sat at desks in a classroom looking at their teacher stood at the front

    5 ways to reinspire your students after the summer holidays

    By Joanna Wiseman

    The new academic year is here and we're getting ready to head back to the English classroom. Yet, after a long and relaxing summer holiday, some students may feel unmotivated to return to the same class routine, especially if they have been learning English for several years. So, how can we reinspire students to keep learning and reconnect with English? By bringing in new resources, learning approaches and targets, we are sure you'll be able to rekindle their love of learning.

    So let's look at five ways to reinspire your English students in the coming academic year.

    1. Set new goals

    Students may lose interest in classes or feel discouraged when they don't have a clear target to work towards. If this is the case with your class, have them write up a list of five new goals they'd like to achieve.

    These goals must be SMART: Specific, Measurable, Achievable, Relevant and Timely. So rather than just saying "I'd like to learn more vocabulary", have students make it SMART.

    For example:

    Specific: "I'd like to learn new advanced vocabulary to use in my writing."

    Measurable: "I'll test myself to see if I can define and use 20 new words in sentences."

    Achievable: "I will dedicate 2 hours a week to studying the definitions and writing example sentences in context."

    Relevant: "This will help me get a good score in myas I struggle with formal academic language."

    Timely: "I will learn 20 new words by the end of September."

    If learners find it difficult to think of goals, ask them to write one for each language skill: listening, reading, writing and speaking. You can also refer to the GSE Teacher Toolkit, which has hundreds of learning objectives organized by age, level, skill type and more.

    The idea is to encourage them to set clear objectives, giving them an exciting new challenge to work towards for the year ahead.

    2. Encourage students to find conversation partners

    Students may lose interest in improving their English if they've only been studying in a classroom. They may see it as something boring and unrelated to their real lives.

    A great way to tackle this is by encouraging them to talk with English speakers outside of class. By doing this, they'll pick up new vocabulary and expressions, giving them more confidencein their language abilities.

    Suggest that they attend a language exchange.andaregreat platforms to find regular language exchange events in their local area. While this is suitable for intermediate learners and above, it may be a bit daunting for beginners.

    In this case, the appmay be a suitable alternative. Similar to a language exchange, learners can connect with people from around the world. They can choose people with a similar level as them and either write messages, send short audios, or do video calls, depending on their ability and confidence.

    Communicating with real people is a fun and encouraging reason for your learners to want to improve.

    3. Introduce interesting new vocabulary

    Students may become disheartened if they've been learning for years but aren't seeing much progress. A simple and effective way to help them improve their level is by encouraging them toexpand their vocabulary.

    They already have to study a lot of vocabulary from their textbooks, so why not give it a more personal twist and ask for suggestions of topics that interest them?

    Maybe they are gamers and want to learn how to communicate better with other players around the world. Select vocabulary about styles of games, turn-taking, and strategizing that they could use – they can practice in class and be thrilled to be given homework.

    Perhaps some of your students want to study or work abroad. This may be a common topic, but one thing that is not frequently discussed is how to deal with the paperwork of living in another country. For example, getting into more specific language about banking, housing rentals, or setting up wifi will help them feel more confident about their move. Though these things differ between countries, there is a lot of overlapping vocabulary and roleplaying will do wonders to reassure and excite them about their upcoming adventures.

    By allowing your students to take control of their learning, their motivation is naturally higher and you too will enjoy finding out specific language about their interests.

    4. Work on specific problem areas

    Language learners may become frustrated and lose motivation if they continue to make the same mistakes. It may cause them to feel disheartened in their abilities and want to give up, especially for those who aim to sit exams. You can help them level up by identifying specific problem areas and tailoring your classes to work on these.

    Tests can help your learners discover their weaknesses and avoid the frustration of sitting and not passing an exam. They'll be able to pinpoint what they need to work on, and you can dedicate your classes to exactly what they need, rather than cover areas they may not have problems with.

    For example, if students are experiencing difficulties with reading comprehension, you could try introducing more varied reading materials. Ask them to bring in blog posts, magazines and news articles on topics that they find interesting. Highlight keywords in the text to enhance their understanding of the piece and create comprehension questions similar to the test format they'll take.

    By giving a little extra attention to fixing problem areas, learners will soon start to see their progress, encouraging and inspiring them to keep going.

    5. Change your class format

    Sometimes learners become demotivated simply because they have become too used to the format of the classes. If this is the case, you might want to take a break from the textbook and try more creative language learning methods. For example:

    Use interactive games

    Suitable for all levels, you can use platforms such asor to test your learners. They offer a new dimension to the class, encouraging students to have fun with the language. Divide them into teams to add an element of competition – there's nothing like a friendly game to excite students!

    Set project work

    Put your class into small groups and have them work on a project to present to the rest of the group. Choose topics they might cover in their textbooks, such as occupations, travel or cultural traditions. Or even better – let students come up with their own! This activity can be modified to suit all levels and offers a challenge as learners will need to push their language limits.

    Hold class debates

    More suitable for intermediate learners and above, class debates get everyone talking. You can ask students to brainstorm topics they're interested in. You can offer prompts such as climate change, the advertising of junk food or the impacts of social media. They'll be happy to talk about things that concern them.

    Throw in some unexpected activities to bring students' attention back to class and spark their interest in learning again.