How to Study in High School: Evidence-Based Methods That Get Results

The average high school student spends 7 hours per week on homework and studying. Most of that time goes to re-reading notes, highlighting textbooks, and cramming the night before exams. The result: mediocre retention and a lot of stress. Dunlosky et al. (2013) reviewed the 10 most popular study methods and found that highlighting and re-reading—the two techniques students use most—are the two least effective.

This isn't a willpower problem. It's a strategy problem. The students who consistently get A's aren't necessarily smarter or more disciplined—they use different techniques. The good news: the techniques that actually work are faster than the ones that don't. You can study less time, remember more, and stress less before exams. Here's how.

Why Most Study Methods Don't Work

Your brain has two completely different processes for interacting with information: recognition ("I've seen this before") and recall ("I can produce this from memory"). Exams test recall. But re-reading and highlighting only build recognition.

That's why the experience of studying for hours, feeling confident, and then blanking on the test is so common. You recognize the material—it looks familiar—but you can't recall it under test conditions. Karpicke & Blunt (2011) showed this gap directly: students who practiced recall retained 50% more than students who re-read the same material.

Study Methods Ranked by Evidence (Dunlosky et al., 2013)

Technique	Rating	Students Who Use It
Practice testing	High	~15%
Spaced practice	High	~10%
Interleaved practice	Moderate	~5%
Self-explanation	Moderate	~20%
Highlighting	Low	~84%
Re-reading notes	Low	~75%

The pattern is clear: the methods used by the fewest students are the most effective, and the methods used by the most students barely work. Flip this ratio and your grades change.

The 3 Techniques That Actually Work

1. Active Recall (Practice Testing)

Active recall means testing yourself instead of re-reading. Close your notes. Try to write down everything you remember about the topic. Then check what you missed. The act of trying to retrieve information from memory—even if you fail—strengthens the memory trace far more than passively seeing the information again.

Roediger & Karpicke (2006) ran a landmark study: students who tested themselves on material recalled 80% after one week, compared to just 36% for students who spent the same time re-reading. That's more than double the retention, with the same time investment.

How to do it in high school

• After class: close your notebook, grab a blank sheet, and write everything you remember from the lesson. 3-5 minutes is enough
• Before homework: try to recall the key formulas or concepts before opening your textbook. Then check and fill gaps
• Flashcards: make them yourself (the creation process is part of the learning). Put the question on one side, the answer on the other. Test yourself daily
• The "blank page" method: start every study session with a blank page and write everything you know about the topic. No peeking. Then compare to your notes and focus your study time on what's missing

2. Spaced Repetition (Don't Cram)

Spaced repetition means spreading your study sessions out over days and weeks instead of cramming everything the night before. Cepeda et al. (2006) analyzed 254 studies and found spacing improves retention by 10-30% across all types of material.

Here's the key insight from the forgetting curve: you forget most of what you learn within 24 hours. But if you review at the right moment—just before you'd forget—the memory becomes much stronger. Each well-timed review doubles the duration before the next one is needed.

A practical spacing schedule for high school

Spaced Review Schedule for High School Students

When	What to Do	Time
Same day as class	Write everything you remember from class (blank page recall)	5 min
Next day	Review your gaps, then test yourself again	5-10 min
3 days later	Self-quiz: can you explain the key concepts without notes?	10 min
1 week later	Flashcard review or practice problems	10-15 min
Before the test	Practice test under timed conditions (not re-reading)	30-45 min

Total time: about 60-85 minutes spread across two weeks. Compare that to a 3-hour cramming session the night before—spaced practice takes less total time and produces dramatically better results. And unlike cramming, the knowledge sticks for finals and standardized tests.

3. Interleaving (Mix It Up)

Most students practice one topic until they feel confident, then move to the next. This is called "blocked practice." Interleaving means mixing different topics or problem types within a single study session.

Rohrer & Taylor (2007) tested this with math students and found interleaved practice improved test scores by 43% compared to blocked practice. The effect was strongest on tests where problems weren't sorted by type—exactly like real exams.

How to interleave in high school

• Math: instead of doing 20 algebra problems then 20 geometry problems, alternate between them. This forces your brain to identify which strategy to use—a skill exams test directly
• Science: mix biology vocabulary review with chemistry problem-solving and physics concept explanations in one session
• History: practice questions from different time periods and regions together, not separated by chapter
• Languages: mix vocabulary, grammar, reading, and listening practice within each session rather than doing one skill at a time

Study Strategies by Subject

Best Study Techniques for Each High School Subject

Subject	Best Technique	Specific Example
Math	Interleaved practice problems	Mix algebra, geometry, and trigonometry problems. Solve without looking at examples first
Biology	Spaced flashcards + diagrams	Draw cell diagrams from memory. Use spaced repetition for vocabulary (mitosis, meiosis, etc.)
History	Active recall + timelines	Close the textbook, write the key events and dates from memory. Use Cornell notes in class
English/Literature	Feynman Technique	Explain the theme of a novel in your own words as if to a younger sibling. If you can't, you don't understand it
Chemistry	Practice problems + root word mnemonics	Balance equations from scratch. Learn element naming patterns (see memorize the periodic table)
Foreign Language	Spaced repetition + immersion	Daily flashcard sessions for vocabulary. Listen to podcasts in the target language (see tips for language learners)
Physics	Worked examples + self-explanation	Study a solved problem, then solve a similar one without looking. Explain each step aloud

How to Handle Exam Stress

Test anxiety isn't about weakness. It's a predictable neurological response. When you feel unprepared, your brain's amygdala triggers a stress response that impairs working memory—the very cognitive resource you need for exams. Beilock (2008) found that test anxiety reduces working memory capacity by up to 20%, directly lowering scores.

The research-backed solutions:

• Expressive writing before the exam. Ramirez & Beilock (2011) found that students who wrote about their test anxiety for 10 minutes before an exam improved scores by nearly one full grade point. Writing externalizes the worry, freeing working memory
• Practice under test conditions. Take practice tests with a timer in a quiet room. The more familiar the test format feels, the less anxiety it produces. Familiarity reduces the stress response
• Reframe anxiety as excitement. Brooks (2014) showed that telling yourself "I'm excited" (rather than "I'm calm") before a performance improves outcomes. Both anxiety and excitement are high-arousal states—redirect the energy rather than suppressing it

Building a Weekly Study Routine

The best system is the one you actually follow. Here's a realistic weekly routine for a high school student with 5-6 classes:

The Science of Sleep and Grades

Sleep is not optional for learning. It's when your brain consolidates memories from short-term to long-term storage. Walker (2017) found that sleep deprivation reduces learning capacity by 40%. One all-nighter wipes out nearly half your brain's ability to form new memories the next day.

Wolfson & Carskadon (2003) studied 3,000 high school students and found a direct relationship between sleep and GPA: A-students slept an average of 25 minutes more per night than B-students, and 40 minutes more than C-students. The effect was consistent across subjects and demographics.

The practical rule: 8-10 hours of sleep for high schoolers (per the American Academy of Sleep Medicine). If you're choosing between an extra hour of studying and an extra hour of sleep, choose sleep. Your brain needs it to consolidate everything you studied during the day.

5 Mistakes That Kill High School Grades

1. Studying in one marathon session. Your brain's attention degrades after 25-50 minutes. Use the Pomodoro Technique: 25 minutes of focused work, then a 5-minute break. Three Pomodoros (75 min) beats three hours of unfocused studying
2. Listening to music with lyrics while studying. Perham & Currie (2014) found that background music with lyrics reduces reading comprehension by 10-15%. Instrumental music or silence is fine. Lyrics compete for the same language-processing resources your brain needs for studying
3. Multitasking with your phone. Rosen et al. (2013) tracked students and found they could only focus for an average of 3-5 minutes before checking their phones. Each interruption costs 10-15 minutes of refocused attention. Put the phone in another room while studying
4. Only studying for the next test. High school courses are cumulative. What you learn in September shows up on the final in June and on the SAT/ACT. If you cram and dump, you'll re-learn the same material 3-4 times. Spacing is actually faster in the long run
5. Not sleeping enough. Staying up late to study produces the opposite of what you intend. You retain less of what you studied and perform worse the next day. Study earlier, sleep longer

The Research

• Dunlosky et al. (2013) reviewed 10 study techniques across hundreds of studies: practice testing and spaced practice are the only "high utility" methods, published in Psychological Science in the Public Interest
• Roediger & Karpicke (2006) showed practice testing produced 80% retention at 1 week vs 36% for re-reading, published in Psychological Science
• Cepeda et al. (2006) meta-analyzed 254 studies showing spaced practice improves retention by 10-30%, published in Psychological Bulletin
• Rohrer & Taylor (2007) demonstrated interleaved practice improved math test scores by 43% vs blocked practice, published in Instructional Science
• Ramirez & Beilock (2011) found that 10 minutes of expressive writing before an exam improved scores by nearly a full grade point, published in Science
• Wolfson & Carskadon (2003) showed A-students sleep 25 minutes more per night than B-students across 3,000 high schoolers, published in Child Development

Key Takeaways

• Stop highlighting and re-reading. They're the most popular study methods and the least effective. Replace them with active recall (testing yourself)
• Space your studying across days—5 short sessions beats 1 long cram session. Total time is less, retention is 2-3x higher
• Mix subjects within study sessions (interleaving). It feels harder, which is exactly why it works—43% better test scores
• Sleep 8-10 hours. A-students average 25 minutes more sleep than B-students. Your brain consolidates memories during sleep—don't skip it
• Use the blank page method after every class: close your notes, write everything you remember. 5 minutes of this beats 30 minutes of re-reading

Continue Learning

• Active Recall: The #1 Study Technique
• How Spaced Repetition Works
• How to Study for Exams
• How to Focus While Studying
• Study Methods for College Students