How to find learning gaps from test results
A practical method for turning one test's marks into a prioritised list of topics to reteach — plus a free analyser that does the arithmetic.
- Who it's for
- Coaching teachers, tutors and heads of department.
- What it helps with
- Decide what to reteach first, using marks you already have.
- Written by
- Heramb.study editorial team
- Last reviewed
A test result is usually reported as one number. But the useful information is underneath: which topics a student (or a whole class) is secure in, which are developing, and which are real gaps. This guide shows a simple, repeatable way to get there with marks you already have.
Step 1 — Split the marks by topic
Tag each question to one topic. If your test series gives a topic-wise breakdown, use it. If not, a 10-minute pass with the question paper is enough. Keep topics fine-grained enough to act on: "Chemical bonding" is useful; "Physical chemistry" is not.
Step 2 — Classify each topic
| Status | Rule of thumb | Typical action |
|---|---|---|
| Secure | 75% or more | Maintain with mixed practice |
| Developing | 50–74% | Short targeted practice, then re-check |
| Learning gap | Below 50% | Find the cause first, then reteach or practise |
These thresholds are a practical starting point, not a standard. Adjust them for very hard papers or exams with heavy negative marking.
Step 3 — Prioritise by what's at stake
A 30% score in a topic worth 4 marks matters less than 45% in a topic worth 20. The analyser below orders topics by status first, then by marks at stake — the marks still available in that topic.
Learning-gap analyser
Runs in your browser — marks you type, paste or upload aren't sent to us
Enter marks per topic from one test — for one student, or the class average. Negative marking is fine; the percentage uses marks above zero.
Step 4 — Find the cause before you reteach
Low marks in a topic can come from a misunderstood concept, a shaky method, careless slips, misreading, or time pressure. Each needs a different response, and reteaching the whole chapter only fixes the first. Our guide to repeated mistakes shows how to tell them apart.
Step 5 — Plan a follow-up check
Practice is only useful if it closes the gap. Schedule a short follow-up on the same topics two to four weeks later, then compare fairly using the assessment comparison guide.
Sources
- Black, P. & Wiliam, D. (1998). Assessment and classroom learning. Assessment in Education: Principles, Policy & Practice, 5(1), 7–74. doi.org/10.1080/0969595980050102
- Dunlosky, J. et al. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4–58. doi.org/10.1177/1529100612453266
Spotted an error? Report it — we correct mistakes and update the review date.