How to Score 90+ in Class 10 Science Boards
Let’s cut the panic. A lot of unnecessary hype surrounds the Class 10 board exam. Science, in particular, gets a bad reputation for being "too hard" or requiring a photographic memory. The truth? It’s completely manageable if you stop trying to memorise everything and start focusing on how things actually work.
Examiners aren't testing your rote learning; they are testing your clarity. Here is exactly how to prepare, retain information, and write an exam that scores high.
If you want 90+ in Class 10 Science boards 2026, stop treating it like a memorisation subject. Science is 80% understanding + 20% practice. NCERT is your only bible, read every line, solve every in-text question and exercise. Anything extra is a waste of time.
Let's skip the motivation speech. You don't need it. What you need is a clear plan, executed properly. Here it is.
First, understand what this paper actually is
Science is one paper, three subjects, 80 marks, 3 hours. That's it.
The paper breaks down like this:
- Section A – Biology (Q1–16): 30 marks
- Section B – Chemistry (Q17–29): 25 marks
- Section C – Physics (Q30–39): 25 marks
Unit-wise weightage (this determines where your time goes):
| Unit | Marks |
|---|---|
| Chemical Substances (Chemistry) | 25 |
| World of Living (Biology) | 25 |
| Effects of Current (Physics) | 13 |
| Natural Phenomena (Physics) | 12 |
| Natural Resources | 5 |
Internal assessment is 20 marks — finish every practical, maintain your record book. That's essentially free marks. Don't waste them.
Question types you'll face: MCQs, Assertion-Reason, 2-3 mark short answers, diagrams, numericals, and 4-5 mark long answers with case-based questions.
The only book you need
NCERT. Every line. Every in-text question. Every exercise.
Not "reference books." Not "guide books." Not "toppers' notes from YouTube." NCERT is what the paper is written from. If you've genuinely understood every chapter in NCERT, not just read it, understood it, you will score well. Everything else is noise unless your NCERT is completely solid first.
How to actually study each subject
Physics
Physics is formula + application. There's no shortcut here.
- Write every formula with its derivation once a week. Don't just "know" them; be able to derive them cold.
- Do 2–3 numericals every single day. Not in bulk once a week. Daily.
- Draw ray diagrams and electric circuits repeatedly until your hand does it automatically. Lenses, mirrors, series circuits, parallel circuits — these appear every year and are easy marks if you've practised.
Chemistry
The biggest mistake students make in Chemistry: they memorise reactions without understanding why they happen.
- Understand the reaction type first (combination, decomposition, displacement, double displacement, redox). Once you know the logic, balancing and recalling become much easier.
- Balance equations daily. Pick 5 equations, balance them, and move on. By the time exams come, this should take you 30 seconds per equation.
- Make a single A4 reaction chart covering all important reactions. Stick it somewhere you see daily. That chart is your last week's revision tool.
Biology
Biology is where most marks are lost for a stupid reason: poor diagrams.
- The heart, nephron, brain, reflex arc, flower, alimentary canal, cross-section of a leaf, draw and label each of these at least 10 times before the exam. Not 2 times. 10.
- Heredity crosses (Mendel's laws, monohybrid, dihybrid), practice until you can set up and solve them without thinking.
- Life processes: understand the mechanism, not just the definition. Why does the heart have four chambers? What actually happens in the nephron? If you can explain it in plain language, you've understood it.
How to structure your preparation
Now until October: finish the syllabus
- Divide all chapters into three buckets right now: Strong, Needs Work, Haven't Touched. Work strictly from the bottom up, weakest chapters first. Stop revisiting chapters you already know just because they're comfortable.
- Set Daily Micro-Targets: Don't just sit down to "study science." Wake up and set a hyper-specific goal: "Today, I will master ray diagrams for lenses." Hitting these small, daily targets builds massive confidence. Specific targets are completable. Vague ones aren't.
After October: only revision and papers
- Once the syllabus is done, your job is papers. If you want a guaranteed way to score well, Solve the last 10 years of CBSE board papers, plus all available sample papers for 2024–2026. The exact numbers change, the concept structure doesn't.
- Strict rule: time yourself. Sit with the paper, 3 hours, no breaks, no cheating. Then analyse your mistakes. Make a mistake notebook, write down every error you repeat. That notebook is what you revise from in the last two weeks, not the textbook.
Study session structure
- Study in 40–50 minute focused blocks. Phone out of the room. After the block, take a real break, step away from the desk, walk around, listen to something. Then come back.
- The reason you can't retain information isn't because the content is hard. It's because you're either studying too long in one stretch without breaks, or you're passively reading instead of actively writing and testing yourself.
- Sleep 7–8 hours. Non-negotiable. A tired brain does not retain. Bad sleep = zero retention the next day. Cutting sleep to study more is mathematically a bad trade.
- Wake up whenever you want, but hit your daily target. Confidence comes from completing targets, not from early mornings.
In the exam hall
- Read each question completely before writing. Know what's being asked.
- If a question involves any concept that has a diagram, draw it. Labelled, neat, to scale if relevant. Examiners look for this. It demonstrates understanding in a way text alone doesn't.
- Keep handwriting legible and leave space between answers. Don't force the examiner to hunt for your points. Make it easy to read, easy to mark.
- Don't leave long-answer questions blank. Even a partial diagram or correct formula attempt gets partial credit.
The actual truth about this exam
The paper is not designed to fail you. It's designed to check whether you understood the concepts taught in class. If you have, you will pass comfortably. If you've understood them well and practiced consistently, you will score 90+.
That’s it. No magic, no all-nighters, no “believe in yourself” drama. Just consistent understanding + practice. Do this properly, and the paper will feel easy. You’ve got three subjects in one paper; master the pattern, and you’re done.
Now stop reading tips and start executing. Go.