Methodology

How Eduentry’s Adaptive Assessment Works

Eduentry uses the same psychometric methodology as professional cognitive assessments — Item Response Theory with adaptive questioning — to produce accurate, internationally comparable scores for children aged 6–17.

Adaptive Testing

Unlike a fixed test where every child answers the same questions, Eduentry adapts in real time. After each answer, the system updates its estimate of the child's ability level and selects the next question to provide maximum measurement precision at that level.

This means a child who answers correctly receives harder questions; a child who struggles receives easier ones. The result: fewer questions are needed to achieve the same measurement accuracy as a traditional fixed-length test.

Key benefit

A 15-question adaptive test can match the accuracy of a 100 question fixed test, because every question is chosen to be maximally informative for that specific child.

Item Response Theory (IRT)

Eduentry uses the 2-Parameter Logistic (2PL) IRT model — the same model used by PISA, large-scale standardised assessments, and professional educational psychologists.

Each question has two parameters:

  • Difficulty (b) — the ability level at which a child has a 50% probability of answering correctly.
  • Discrimination (a) — how well the question differentiates between children just below and just above the difficulty threshold.

Ability estimation uses Maximum A Posteriori (MAP) estimationwith a standard normal prior. After each response, the posterior distribution over ability is updated using Bayes' theorem, and the MAP estimate is taken as the current ability estimate.

Scoring Scale

Raw IRT ability estimates (θ) are transformed to a standardised scale with mean 100 and standard deviation 15 — the same scale used by CAT4, the 11+ standardised tests, and professional cognitive assessments such as WISC and WASI.

Score RangeBandPercentileSD from Mean
120+Exceptional90th++1.33σ and above
110–119Above Average75th–90th+0.67σ to +1.33σ
95–109Average37th–73rd−0.33σ to +0.67σ
85–94Below Average16th–37th−1σ to −0.33σ
Below 85Needs SupportBelow 16thBelow −1σ

68% of children score between 85 and 115 (within ±1 standard deviation of the mean).

International Benchmarks

Eduentry maps each score band to four internationally recognised educational frameworks, giving families a global context for their child's performance.

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UK National Curriculum

Scores map to: below expected standard / approaching / meeting / above expected / highly able. Competitive grammar school scores are typically 115+.

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US Grade Levels

Scores map to: below / approaching / at / above / significantly above grade level, aligned to Common Core and NAEP proficiency descriptors.

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PISA (OECD)

Scores map to PISA proficiency Levels 1–6. Average OECD performance corresponds to approximately Level 3, equivalent to a standardised score near 100.

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IB Programme

Scores indicate readiness for IB Middle Years Programme, IB Standard Level, or IB Higher Level subjects in the Diploma Programme.

What You Learn from the Results

Unlike a traditional school test that grades a child against a local cohort, a student and their parent who complete the Eduentry assessment will receive a comprehensive results screen and a printable report showing exactly where the child stands globally.

Here is exactly what they will learn from the results:

  • Standardised Score and Performance Category — a score on the mean-100, SD-15 scale, placed into one of five bands: Needs Support (70–84), Below Average (85–94), Average (95–109), Above Average (110–119), or Exceptional (120+).
  • Global Percentile Ranking — how the child performs compared to same-age peers worldwide, expressed as a percentile (e.g. top 10%, top 25%).
  • Detailed Subject Breakdowns — individual scores and performance bands for English, Mathematics, Verbal Reasoning, and Non-Verbal Reasoning, so parents and children can see exactly where strengths and gaps lie.
  • International Benchmarking — the score mapped to UK National Curriculum levels, US grade-level equivalents, PISA proficiency levels, and IB programme readiness.
  • AI-Generated Personalised Recommendations— targeted study recommendations based on the child's specific performance profile, highlighting the areas most likely to improve their overall score.

Together, these five outputs give families a clear picture of their child's global standing, specific weaknesses, and actionable steps to improve — all from a single 90-minute assessment.

Want to see all five on one page? View the sample report →

Subjects Assessed

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English

Reading comprehension, grammar, vocabulary, spelling, and written language conventions.

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Mathematics

Arithmetic, algebra, geometry, statistics, and mathematical problem-solving.

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Verbal Reasoning

Word analogies, classifications, logical sequences, and language-based problem solving.

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Non-Verbal Reasoning

Pattern recognition, spatial reasoning, matrix completion, and visual logic.

Character Strengths Assessment Methodology

Eduentry's personality assessment uses a fundamentally different approach from the adaptive IRT academic assessment. Rather than measuring knowledge and reasoning, it quantifies a child's character traits through structured parent observation — rated by the adult who sees the child every day.

The VIA Character Strengths Framework

The assessment is built on the VIA Character Strengths framework, developed by positive psychologists Dr. Martin Seligman and Dr. Neal Mayerson. It identifies 24 universal character traits grouped under 6 core virtues: Wisdom, Courage, Humanity, Justice, Temperance, and Transcendence. The framework has been validated across cultures and is used by researchers in over 190 countries.

Parent-Rated Survey Design

Parents complete a short observation-based survey of 1–5 star ratings for behaviours they witness in their child every day. Children do not participate directly. This design is intentional: children's self-perceptions change rapidly, and parental observation provides a more stable, accurate baseline — particularly for children aged 6–13.

Questions are calibrated to the child's developmental stage. Four age tiers match both vocabulary and the traits assessed to how character typically develops at each stage:

Junior

6–9

12 traits

24 questions

Intermediate

10–13

15 traits

30 questions

Adolescent

14–17

20 traits

40 questions

Young Adult

18–20

All 24 traits

48 questions

What the Report Produces

Unlike the academic assessment, the personality report does not produce a single standardised score. Instead it ranks traits relative to each other and generates:

  • Top 5 Signature Strengths — the traits where the child scores highest, representing their natural areas of excellence.
  • Bottom 3 Growth Areas — traits with the most room to develop, presented with gentle framing rather than a deficit label.
  • AI-Generated Exercises — tailored, real-world activities the parent can practise at home, specific to the child's unique strength profile.

Want to see what your child's character profile looks like? Start the free personality assessment →

Transparency

Eduentry offers a robust and adaptive approach to student assessment, generating results that provide an accurate representation of each learner's academic capabilities.

Traditional assessments are often limited by fixed question sets, where performance can be unduly affected by the difficulty level of the questions rather than the student's actual ability. Eduentry addresses this limitation through an AI-driven adaptive engine that continuously adjusts question difficulty based on each student's responses, ensuring that outcomes reflect true academic potential rather than the structure of the test itself. This produces a consistent, fair, and meaningful measure of each learner's strengths and developmental needs.

While Eduentry's methodology differs from CAT4, GL Assessment, and WISC, its results serve as a reliable and actionable basis for educational planning and decision-making. In cases where formal diagnostic evaluation is required, Eduentry functions as a valuable complement to established psychometric assessment tools.

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