How to Study Smarter, Not Harder: Evidence-Based Study Techniques

The Problem With How Most Students Study

If you’re like most South African students, your study routine probably looks something like this: open your notes, read through them, maybe highlight some key points, read them again, and hope that the information sticks by exam day.

Here’s the uncomfortable truth: re-reading and highlighting are among the least effective study methods. They feel productive — you’re spending time with the material, after all — but decades of cognitive psychology research show they produce weak, shallow learning that crumbles under exam pressure.

The good news? There are study techniques that are proven to work significantly better, and they don’t require more time. They require different time. At LeagueIQ, we believe every student deserves to know what actually works. Here are the evidence-based techniques that top students use.

Active Recall: Test Yourself Instead of Re-Reading

Active recall is the single most powerful study technique available to you. The principle is simple: instead of passively reading information, you actively retrieve it from memory.

Here’s how it works in practice:

The blank-page method: After studying a section, close your notes. Take a blank page and write down everything you remember about the topic. Don’t worry about getting it perfect — the act of struggling to remember is what strengthens the memory. Then open your notes and check what you missed. Study those gaps. Repeat.

Flashcards: Write a question on one side and the answer on the other. Test yourself regularly. The key is to genuinely try to answer before flipping the card — simply reading both sides is just re-reading in disguise.

Practice questions: Work through questions from your textbook, past papers, or study guides without looking at your notes. Every time you successfully retrieve an answer from memory, that memory becomes stronger. Every time you struggle and then learn the correct answer, you’ve identified and filled a gap.

Research consistently shows that students who use active recall remember significantly more than students who spend the same amount of time re-reading. It feels harder — and that’s exactly why it works. Difficulty during learning creates durability in memory.

Spaced Repetition: Timing Matters

When do you study a topic? Most students study everything in one long session the week before the exam. This is called “massed practice” or cramming, and while it can get you through a test, the information disappears from memory within days.

Spaced repetition is the opposite approach. You study a topic, then wait two to three days before studying it again. Then wait a bit longer. Then again. Each time you revisit the material after a gap, you strengthen the memory trace.

Think of it like watering a plant. Pouring a bucket of water on it once a month is less effective than watering it regularly. Your brain works the same way — regular, spaced exposure builds stronger memories than one intense session.

Practical application: If your exams are in six weeks, create a study schedule that revisits each subject multiple times rather than dedicating one solid week to each subject. You’ll remember far more on exam day.

Interleaving: Mix It Up

Conventional wisdom says you should study one topic thoroughly before moving to the next. Algebra for two hours, then geometry for two hours, then trigonometry for two hours.

Research suggests the opposite is more effective. Interleaving means mixing different topics or types of problems within a single study session. Thirty minutes of algebra, then thirty minutes of geometry, then thirty minutes of trigonometry, then back to algebra.

This feels counterintuitive because interleaving makes studying feel harder and more confusing. But that productive difficulty forces your brain to constantly retrieve and distinguish between different concepts, which builds deeper understanding and better long-term retention.

Interleaving is particularly effective for Mathematics and Physical Sciences, where you need to recognise which method to apply to which type of problem — a skill that blocked practice (doing 20 identical problems in a row) doesn’t develop.

The Feynman Technique: Teach to Learn

Named after the Nobel Prize-winning physicist Richard Feynman, this technique is devastatingly effective at exposing gaps in your understanding.

Here’s how it works:

1. Choose a concept you’re studying
2. Explain it as if you’re teaching a ten-year-old — use simple language, no jargon
3. When you get stuck or can’t explain something simply, you’ve found a gap in your understanding
4. Go back to your notes, fill that gap, and try explaining again

If you can explain a concept in simple, clear language, you truly understand it. If you can only repeat the textbook definition, you’ve memorised words without understanding meaning — and the examiner will see straight through that.

You can do this alone (explain out loud or write it out), with a study partner, or even by teaching a family member. The act of translating complex ideas into simple language forces deep processing that passive reading never achieves.

Practice Testing: The Exam Before the Exam

Practice testing goes beyond past papers (though past papers are excellent — see our guide on LeagueIQ for more). It includes:

• Creating your own exam questions based on the material
• Answering textbook questions without looking at worked examples first
• Writing out definitions, processes, or formulas from memory
• Teaching others and answering their questions

Creating your own questions is particularly powerful because it forces you to think like an examiner — what’s important enough to test? How would this be asked? What would the memo look like?

What Doesn’t Work (Despite Feeling Productive)

Let’s be direct about methods that waste your time:

Highlighting: Feels like you’re engaging with the material, but you’re just colouring your notes. Research shows highlighting produces almost no benefit for learning.

Re-reading: Familiar information feels like known information. But recognising something when you see it is very different from being able to recall it in an exam. Re-reading creates an illusion of knowledge.

Copying notes: Unless you’re transforming the information (summarising, reorganising, connecting ideas), copying is just slow re-reading with a pen.

These methods aren’t completely useless — they’re fine as a first pass through new material. But they should never be your primary study strategy.

Restructure Your Study Sessions

Here’s what an effective study session looks like using these techniques:

1. Brief review (10 minutes): Quickly read through the section you’re about to study
2. Active recall (20 minutes): Close your notes and write/say everything you remember. Check against your notes
3. Practice questions (20 minutes): Work through problems or questions without notes
4. Feynman check (10 minutes): Explain the key concepts in simple terms. Note any gaps
5. Review gaps (10 minutes): Study only what you got wrong or couldn’t explain

Schedule your next session on this topic two to three days later (spaced repetition). Mix in questions from previous topics (interleaving).

The Bottom Line

Studying smarter isn’t about finding shortcuts or tricks. It’s about using methods that align with how your brain actually learns. These techniques — active recall, spaced repetition, interleaving, the Feynman technique, and practice testing — are backed by decades of research and used by top students worldwide.

The only question is whether you’ll keep doing what feels easy, or start doing what actually works. Your exam results will reflect that choice.