Explaining computerized English testing in plain English

app Languages
a pair of hands typing at a laptop

Research has shown that automated scoring can give more reliable and objective results than human examiners when evaluating a person’s mastery of English. This is because an automated scoring system is impartial, unlike humans, who can be influenced by irrelevant factors such as a test taker’s appearance or body language. Additionally, automated scoring treats regional accents equally, unlike human examiners who may favor accents they are more familiar with. Automated scoring also allows individual features of a spoken or written test question response to be analyzed independent of one another, so that a weakness in one area of language does not affect the scoring of other areas.

was created in response to the demand for a more accurate, objective, secure and relevant test of English. Our automated scoring system is a central feature of the test, and vital to ensuring the delivery of accurate, objective and relevant results – no matter who the test-taker is or where the test is taken.

Development and validation of the scoring system to ensure accuracy

PTE Academic’s automated scoring system was developed after extensive research and field testing. A prototype test was developed and administered to a sample of more than 10,000 test takers from 158 different countries, speaking 126 different native languages. This data was collected and used to train the automated scoring engines for both the written and spoken PTE Academic items.

To do this, multiple trained human markers assess each answer. Those results are used as the training material for machine learning algorithms, similar to those used by systems like Google Search or Apple’s Siri. The model makes initial guesses as to the scores each response should get, then consults the actual scores to see well how it did, adjusts itself in a few directions, then goes through the training set over and over again, adjusting and improving until it arrives at a maximally correct solution – a solution that ideally gets very close to predicting the set of human ratings.

Once trained up and performing at a high level, this model is used as a marking algorithm, able to score new responses just like human markers would. Correlations between scores given by this system and trained human markers are quite high. The standard error of measurement between app’s system and a human rater is less than that between one human rater and another – in other words, the machine scores are more accurate than those given by a pair of human raters, because much of the bias and unreliability has been squeezed out of them. In general, you can think of a machine scoring system as one that takes the best stuff out of human ratings, then acts like an idealized human marker.

app conducts scoring validation studies to ensure that the machine scores are consistently comparable to ratings given by skilled human raters. Here, a new set of test-taker responses (never seen by the machine) are scored by both human raters and by the automated scoring system. Research has demonstrated that the automated scoring technology underlying PTE Academic produces scores comparable to those obtained from careful human experts. This means that the automated system “acts” like a human rater when assessing test takers’ language skills, but does so with a machine's precision, consistency and objectivity.

Scoring speaking responses with app’s Ordinate technology

The spoken portion of PTE Academic is automatically scored using app’s Ordinate technology. Ordinate technology results from years of research in speech recognition, statistical modeling, linguistics and testing theory. The technology uses a proprietary speech processing system that is specifically designed to analyze and automatically score speech from fluent and second-language English speakers. The Ordinate scoring system collects hundreds of pieces of information from the test takers’ spoken responses in addition to just the words, such as pace, timing and rhythm, as well as the power of their voice, emphasis, intonation and accuracy of pronunciation. It is trained to recognize even somewhat mispronounced words, and quickly evaluates the content, relevance and coherence of the response. In particular, the meaning of the spoken response is evaluated, making it possible for these models to assess whether or not what was said deserves a high score.

Scoring writing responses with Intelligent Essay Assessor™ (IEA)

The written portion of PTE Academic is scored using the Intelligent Essay Assessor™ (IEA), an automated scoring tool powered by app’s state-of-the-art Knowledge Analysis Technologies™ (KAT) engine. Based on more than 20 years of research and development, the KAT engine automatically evaluates the meaning of text, such as an essay written by a student in response to a particular prompt. The KAT engine evaluates writing as accurately as skilled human raters using a proprietary application of the mathematical approach known as Latent Semantic Analysis (LSA). LSA evaluates the meaning of language by analyzing large bodies of relevant text and their meanings. Therefore, using LSA, the KAT engine can understand the meaning of text much like a human.

What aspects of English does PTE Academic assess?

Written scoring

Spoken scoring
  • Word choice
  • Grammar and mechanics
  • Progression of ideas
  • Organization
  • Style, tone
  • Paragraph structure
  • Development, coherence
  • Point of view
  • Task completion
  • Sentence mastery
  • Content
  • Vocabulary
  • Accuracy
  • Pronunciation
  • Intonation
  • Fluency
  • Expressiveness
  • Pragmatics

More blogs from app

  • A woman standing at a whiteboard in a office with two others sat down.

    How to bring soft skills into the business English classroom

    Por Richard Cleeve

    Anyone who’s ever taught a business English class knows that their students are busy people. Sometimes they get sidetracked by their other tasks - even during class. This means we have to make the most of the time we have with our learners and focus on what they really need.

    How you do this depends on the sector your students work in (or plan to work in), their previous experiences studying English and their own strengths and weaknesses.

    Teachers often focus on teaching hard skills, such as writing reports or running meetings. We do this because it can be challenging for many business students to do these things in English and also because hard skills have an immediate and positive impact on their workdays.

    But, if there’s one thing that all business people can benefit from, it’s soft skills.

    Soft skills are interpersonal or people skills. They include things like active listening, teamwork, decision-making and influencing skills. Mastering these skills will help students progress more rapidly and become more independent learners. However, isolating the specific vocabulary or grammar structures that these skills use is complex and they often get overlooked in language learning classes as a result.

  • University graduates in robes taking a group photo

    How an education degree can help you work anywhere in the world

    Por app Languages

    Are you thinking about embarking on a career in education? If so, you’ll be opening the door to an entire world of possibilities. An education degree can help you to work anywhere in the world, making it one of the most rewarding career paths you can choose. In this blog, we’ll delve deeper into just how this field of study can broaden your horizons more than you ever thought possible.

    Why choose an education degree?

    Without teachers, there are a lot of valuable life lessons that we just wouldn’t learn. Of course, learning isn’t just limited to the classroom, but educated teachers seem to consistently have the most impact on young people all over the world. This potential to change young lives is what makes studying for a teaching career desirable for many.

    Studying education will also enable you to work from anywhere that you like, as teaching jobs are widely available across the world. The opportunity to teach English to second-language learners in particular can be found in even the most remote locations. Teaching abroad frequently comes with perks, too, , and the chance to meet people from all walks of life.

    Where can I work with an education degree?

    In short: almost anywhere. Some of the most popular places people immigrate to with an education degree include Australia, New Zealand, the UAE, and Saudi Arabia. The latter is particularly attractive, as international school teachers are paid well here, and frequently awarded free accommodation and travel.

    Saudi Arabia is also known for its vast riches, which they invest in building beautiful, gated communities for their expats. These often include air-conditioned housing and community pools. If you choose to relocate here, you’ll usually find yourself teaching a mixture of fellow expats and locals – most people find the exposure to such vastly different cultures particularly exciting.

    Teaching schemes and programs are available to people with relevant education degrees and overseas teaching roles are always in demand, so it's not uncommon to see new programs pop up over time. Make sure to check out relevant embassy and government websites for up-to-date news on schemes that are running.

    If you find a program that interests you, make sure to do your research and find out from others who've participated to ensure its the right program for you. One person's experience teaching can be a lot different from someone else's. The kind of wage, accommodation and benefits can differ greatly depending on the scheme and where you work so its a good idea to research that, comparing it to the area's cost of living.

    What should I study alongside my education degree?

    If you’re choosing to study education you’re already on the right path to an enriching international career – however, you may wish to study other subjects alongside this to make sure that your future job applications stand out.

    An English degree complements education studies nicely. The English language teaching market created approximately , and this number continues to grow. Alternatively, subjects such as maths and computer science continue to be popular choices for hiring companies abroad.

    Education is generally seen as the precursor to a PGCE (Postgraduate Certificate in Education), which enables you to work abroad. In the UK alone as of 2023, so when it comes to getting started on your academic journey, the options are endless.

    Education: the key to the world

    Studying education at degree level will give you the key to the wider world, and is the first step towards a rewarding international career. If you choose to go down this route academically, you’ll have the opportunity to submerge yourself in vibrant global cultures. So, choosing to study for an education degree is sure to be the start of an exciting journey.

  • Two young girls sat at a school desk reading a book

    8 first lesson problems and solutions for young learner classes

    Por Joanna Wiseman

    The first class with a new group of young learners can be a nerve-wracking experience for teachers, old and new. Many of us spend the night before thinking about how to make a positive start to the year, with a mixture of nerves, excitement, and a desire to get started. However, sometimes things don’t always go as expected, and it is important to set a few ground rules in those early lessons to ensure a positive classroom experience for all throughout the academic year.

    Let’s look at a few common problems that can come up and how best to deal with them at the start of the school year.