What is retrieval practice and how do I use it in class?

Retrieval practice is the opposite of re-reading. Instead of putting information back into memory, students pull it out of memory — and that effortful recall is what makes it stick. This is the testing effect, and it's one of the best-replicated findings in all of learning science.

The evidence is striking:

• A classic study (Roediger & Karpicke, 2006) showed that students who studied a passage once and then tested themselves outperformed students who re-read it three more times — when the final test came a week later.
• A meta-analysis across 118 studies (Adesope, Trevisan & Sundararajan, 2017) found an average effect of about d ≈ 0.50 — large and robust across ages, subjects, and materials.
• The catch: students predict the opposite. Re-reading feels productive (fluent, easy); retrieval feels hard, so learners wrongly judge it as less effective. That judgment-of-learning illusion is why so few students use the strategy that works.

How to use it in class:

1. Low-stakes recall opening — 2–3 questions on yesterday's material, no grade, pure retrieval.
2. Brain dumps — "write everything you remember about X" on a blank page, then check against notes.
3. Exit tickets as retrieval — a recall question ("what was the main cause?"), not just a confidence rating.
4. Space it out — revisit material after a gap and interleave topics rather than blocking them. These "desirable difficulties" (Bjork) slow acquisition but boost durable retention.

The fastest way to run retrieval practice daily is to generate quick, curriculum-aligned recall questions — which is exactly what a quiz generator is built for.