What If I Could Go Back to
Being a High School Freshman?

"It's the quality of effort, not the quantity, that determines whether you pass or fail."

One hour of active recall beats three hours of passively re-reading your notes — memory retention is 3x higher. Whether or not you know the scientifically correct study methods fundamentally changes the value of every hour you spend.

• Scientific Study Methods — Spaced repetition, active recall, interleaving
• Strategic Subject Planning — Math and English first; 80/20 focus on high-frequency topics
• Brain Optimization — 8+ hours of sleep, exercise, and nutrition to maximize cognitive function

• The minimum passing score for Tokyo University's Secondary Exam (二次試験, Niji Shiken) is about 57-61% (excluding the most competitive Science III track)
• The Common Test (共通テスト, Kyoutsu Test — Japan's national standardized exam) score of 1,000 points is compressed to just 110 points (only 20% of total)
• The Secondary Exam at 440 points determines 80% of your fate
• Just as 30% of World Cup goals come from set pieces, past exam practice determines 30% of your success

1. The Time Advantage

Starting in April of Year 1 (10th grade) gives you approximately 35 months of preparation. That's an overwhelming advantage over students who only commit in Year 2 or 3. Prep school surveys show that most students who achieved a 15+ point hensachi increase started in Year 1.

2. Hensachi 60 Is Not "Zero"

You already have above-average academic ability. You understand middle school-level material. Build on this foundation with the right methods and it's absolutely reachable. You can progress at double the speed of someone starting from scratch.

3. You Only Need ~60% on the Secondary Exam

The minimum passing score for Tokyo University's Secondary Exam (excluding Science III) is about 57-61% every year (2025 results: Humanities I 61.1%, Science I 58.4%). You don't need to answer everything perfectly. A strategy of nailing 60% and picking up partial credit on the rest is highly effective.

Effect: Memory retention improves by 50-150% compared to passive re-reading

Instead of re-reading your textbook, try to recall "what was written" from memory. By testing yourself, you strengthen the brain's retrieval pathways (the testing effect).

How to practice:

• Read one page of a textbook, close it, and write everything you remember on a blank sheet
• Use flashcard apps (like Anki) to quiz yourself
• Without looking at your notes, try to reconstruct the day's lesson from memory

Effect: Long-term memory retention improves by 200%+ compared to cramming

Based on Ebbinghaus's forgetting curve, reviewing material just as you're about to forget it maximizes retention.

Optimal review intervals:

• 1st review: 1 day later
• 2nd review: 3 days later
• 3rd review: 7 days later
• 4th review: 21 days later
• 5th review: 60 days later

Tool: Anki (free app) is the ultimate tool. It automatically calculates optimal intervals for you.

Effect: 25-76% improvement in scores compared to blocked practice (studying one topic at a time)

Instead of solving the same type of problem repeatedly, mix different types together. This trains your ability to identify which approach to use for each problem.

How to practice:

• Math: Rotate between probability → calculus → vectors → probability...
• English: Rotate grammar → reading comprehension → writing → listening
• The actual exam IS interleaved — get used to it in practice

Repeatedly ask "Why?" and "How?" about what you've learned. Depth of understanding directly correlates with strength of memory.

Example: "The French Revolution happened" → "Why at this particular time?" → "Because fiscal collapse and the spread of Enlightenment ideas coincided"

Explain what you've learned as if teaching an elementary school student. Wherever you stumble in your explanation is where you don't truly understand. Invented by Nobel Prize-winning physicist Richard Feynman.

Steps: (1) Choose a concept → (2) Write an explanation in simple language on blank paper → (3) Go back to the textbook wherever you got stuck → (4) Rewrite it even more simply

Teaching others pushes memory retention to approximately 90% (the Learning Pyramid). The process of reorganizing material to teach it deepens your own understanding.

How to practice: Teach a friend, explain what you learned today to your family, or lecture to a stuffed animal (the Rubber Duck method)

Combine verbal and visual information when studying. Use diagrams, mind maps, and flowcharts. Encoding through two different brain pathways doubles the retrieval cues available.

Chunking

Working memory capacity is 7 plus or minus 2 items (Miller's Law). By grouping information into meaningful chunks, you can effectively expand your memory capacity.

Example: Phone number 09012345678 → 090-1234-5678 (11 digits → 3 chunks)

Memory Palace (Method of Loci)

Used by 90% of memory champions, this is the oldest and most powerful memory technique. Mentally walk through a familiar place (like your home) and "place" items you want to remember at each location. Spatial memory is the type of memory the human brain excels at most.

Sleep and Memory

The first half of sleep (NREM slow-wave sleep) consolidates factual memories, while the second half (REM sleep) strengthens procedural memory and creative problem-solving. Reviewing for 30 minutes before bed improves memory retention by 20-30%.

Exercise and Memory

Aerobic exercise increases BDNF (Brain-Derived Neurotrophic Factor) by 20-30% and promotes neurogenesis in the hippocampus. A 20-minute jog before studying improves test scores by 5-10% (Hillman et al., 2009).

Self-Determination Theory (Deci & Ryan)

Intrinsic motivation is maximized when three basic needs are met:

• Autonomy — The feeling that "I chose this" rather than "I'm being forced." Choose your own study content, order, and location
• Competence — The sense that "I'm getting better." Accumulate small wins. Visualize your mock exam score trends
• Relatedness — Connection with peers and mentors. Find 1-2 study partners

The Science of Habits (Atomic Habits)

Don't rely on motivation. Turn it into a habit and your body will move even when your willpower doesn't.

• Cue — Set action triggers like "when I get home from school" or "after dinner"
• The 2-Minute Rule — "Just do 2 minutes" to eliminate startup resistance
• Environment Design — Leave tomorrow's first study book open on your desk
• Habit Stacking — Attach new habits to existing ones (brushing teeth → 5 min of English vocab)
• Identity — Don't act as "a person who studies" but as "someone who is becoming a Tokyo University student"

GRIT (The Power of Perseverance)

Angela Duckworth's research: GRIT (passion x perseverance) predicts long-term success better than IQ.

• Talent determines the speed at which you acquire skills
• Effort is multiplied twice — once for skill acquisition and once for skill application
• Talent x Effort = Skill, Skill x Effort = Achievement
• In other words, effort counts as IQ squared

Sleep Duration and Cognitive Ability

Based on data from Matthew Walker's research lab

The Ultimate Nap Methods

• The NASA Nap (26 min) — NASA studied long-haul flight pilots and found that a 26-minute nap improved performance by 34% and alertness by 54%. How to: (1) Find a quiet place and close your eyes (2) Set an alarm for 26 minutes (3) It's OK if you don't fall fully asleep (just closing your eyes has an effect) (4) After waking, wash your face and walk for 2-3 minutes before resuming study. Best timing: between lunch and 3:00 PM
• The Coffee Nap (20 min) — Drink coffee, then immediately nap for 20 minutes. Caffeine kicks in (20-25 min) right as you wake up. 36% more effective than either alone
• Rule: No naps after 4:00 PM — they'll disrupt your nighttime sleep

Benefits of Continuing Club Activities

• Cognitive benefits of exercise — Daily club activities directly increase BDNF, relieve stress, and improve focus. No need to carve out separate exercise time
• Time management skills — Having "limited time" actually improves study quality. The constraint eliminates lazy, unfocused studying
• Mental toughness — Pressure from competitions and tournaments directly builds the mental resilience needed on exam day
• GRIT — The perseverance built through club activities transfers directly to exam preparation
• Data: Surveys suggest that approximately 70% of students admitted to Tokyo University were in a club during high school

A Realistic Schedule for Club Members

Weekdays (with club): Study time is 2-2.5 hours after dinner. Looks small, but 2 focused hours beat 5 distracted ones.

Commute time: If you take the train, use Anki (English/classical vocab) for 30-60 minutes round trip. That alone is 200 hours per year.

Morning 15 min: Quick review of yesterday's material before leaving (spaced repetition). Small but cumulative.

Weekends: If club is in the morning, study 4-5 hours in the afternoon. If club is afternoon, study 3 hours in the morning.

After retirement (late Year 2 to early Year 3): Study hours suddenly increase. This "gear shift" is the secret behind club members' late-stage growth.

Watch-Outs for Club Members

• Build a system that doesn't let "I'm tired" become an excuse — After getting home → shower → dinner, sit at your desk and open a textbook "for just 2 minutes"
• Focus on fundamentals in Year 1-2 — Since you can't compete on volume, absolutely lock down math and English basics
• Ruthlessly exploit every gap — Commute, breaks, waiting time before club. Anki app is your best friend
• Plan for post-retirement early — If you suddenly start long study sessions after quitting club without any prior habit, you won't last. Maintain at least "1 hour per day minimum" while still in club

Crisis 1: Month 3-4

"I'm working hard but my mock exam scores aren't going up"

The truth: Knowledge accumulates before it shows up in scores. There's always a time lag. This is the period between planting seeds and seeing them sprout. Just keep going.

Crisis 2: Winter of Year 2

"I got a D/E rating on the Tokyo University mock exam. Maybe I can't do this"

The truth: D/E at the Year 2 stage is completely normal. Most students who ultimately pass had D ratings in Year 2. The big growth spurt comes in Year 3.

Crisis 3: Summer of Year 3

"Other students seem more advanced than me"

The truth: Your benchmark should be "yourself one month ago," not other people. Growth rate is what matters. Stop looking at other people's study reports on social media.

Crisis 4: Autumn of Year 3

"Only 4 months left. I'm nowhere near ready"

The truth: Not a single student in history has ever felt perfectly prepared. "Adequate preparation" is enough to pass. Trust your process and run to the finish line.

Physiological Sigh (Breathing Technique)

Double inhale through the nose (sniff-sniff) → slow, long exhale through the mouth. Stanford University research proved this is the most effective technique for real-time stress reduction. Do 2-3 cycles right before the exam.

Expressive Writing

Spend 10 minutes before the exam writing out your anxious thoughts on paper. University of Chicago research showed anxious students improved by nearly one full grade level. Getting the anxiety out frees up working memory.

Reappraisal

Reframe "I'm nervous" as "I'm excited." Anxiety and excitement are physiologically almost identical states. Harvard research showed this improved GRE scores by 22%.