Class 10 and 12 Board Exam Preparation: A 100-Day Plan

A hundred days sounds like a lot until you count the subjects. A Class 12 science student with five subjects, practical files and a pre-board exam in between has roughly twenty days per subject, and that time disappears quickly if it is not planned. This guide breaks 100 days into four phases with clear goals for each, and shows you how to use the most useful resource you have: your board's own sample question papers and marking schemes. It is written for students of any board, CBSE, CISCE or a state board, so adjust the subject names to your own. It does not give exam dates; your board publishes the date sheet, and you should count your 100 days back from the first paper on that official schedule.

Before Day 1: Collect the Right Material

Spend one evening gathering everything you need, so you are not hunting for resources later.

• The current syllabus for each subject. Boards revise syllabi and deleted portions from time to time, so download the version for your exam year from the official site, not from a forwarded PDF.
• Official sample question papers and marking schemes. CBSE students will find these on cbseacademic.nic.in, the academic website of CBSE, which publishes subject-wise sample papers with marking schemes for Class 10 and Class 12. Exam notices are on cbse.gov.in. CISCE and state board students should use their own board's official website.
• Your textbooks. For CBSE and many state boards, NCERT textbooks are the base. Most board questions can be traced back to them.
• Your own notes and past class tests, especially the marked answer sheets that show where you lost marks.

Always check the latest notice on your board's website before relying on any paper pattern. Formats, question types and internal assessment weightage can change between years.

The Four Phases at a Glance

Phase 1 (Days 1–25): Diagnose and Complete

Most students start "revising" before they have actually finished the syllabus once. Use the first phase to close those gaps.

1. For each subject, list every chapter and mark it green (confident), yellow (studied but shaky) or red (not studied or very weak).
2. Pick up one official sample paper per subject and attempt it open-book, without time pressure. The goal is not marks; it is to see which question types you cannot even begin.
3. Finish the red chapters first. Give each red chapter two to three focused sessions of about 90 minutes.
4. Keep a weak-topic list at the back of each subject notebook. Every time you get stuck, add a line.

Example: Ritika (example), a Class 10 student, found in her open-book Science paper that she could not balance chemical equations or draw the human heart. Both went on her weak-topic list on Day 3. By Day 20 she had practised fifteen equations and drawn the heart five times from memory.

Phase 2 (Days 26–60): Deep Revision

This is the longest phase and the one that decides your score. Work subject by subject in a rotating pattern so that no subject goes untouched for more than four days.

• Read the chapter, then close the book and write. After each section, write down what you remember: definitions, steps of a process, a derivation. Then compare with the book and correct in a different colour.
• Make one revision sheet per chapter. One side of a page only: formulas, keywords, a key diagram, two or three typical questions. These sheets are what you will use in Phase 4.
• Solve NCERT exercise and in-text questions for every chapter in subjects like Maths, Science, Physics and Chemistry. Mark the ones you got wrong and redo them a week later.
• For theory subjects, such as History, Political Science or Business Studies, write short answers to likely questions in point form, the way you would in the exam.

A useful daily shape in this phase is two long sessions on your weaker subjects and one shorter session on a stronger one, so strong subjects stay fresh without eating all your time.

Phase 3 (Days 61–85): Paper Practice

Knowing the content and writing it well in three hours are two separate skills. This phase trains the second one.

How to write a practice paper

1. Choose a fresh official sample paper or a past paper from your board's website.
2. Sit at a table, set a timer for the exact exam duration, and keep your phone in another room.
3. Read the whole paper first, as you would in the hall, then attempt the sections in the order you plan to use in the real exam.
4. Stop when the timer ends, even if you have not finished. Note how far you got.

How to check it using the marking scheme

The marking scheme is the most underused document in board preparation. It shows the value points examiners look for and how marks are split within an answer. Check your paper strictly against it:

• Did your answer contain each value point, or did you write around it?
• Did you show the steps in numerical problems, or only the final answer?
• Did you label diagrams and write units?
• Did you stick to the expected length, or write a page for a short-answer question?

Write the marks you would have received, then list the three biggest reasons you lost marks. Those reasons, not the score, decide what you practise next.

Phase 4 (Days 86–100): Final Polish

In the last two weeks, stop starting new material. Your job is to keep what you know sharp and arrive at the exam rested.

• Revise from your one-page chapter sheets, not from full textbooks.
• Redo only the questions you got wrong in Phases 2 and 3.
• Practise diagrams, maps and graph-based questions, which are quick marks if drawn neatly.
• Keep a regular sleep time. A tired brain makes careless errors in calculation and reading.
• Pack your exam kit (admit card, pens, pencils, geometry box, transparent water bottle if allowed) a few days in advance, following the instructions on your admit card.

Between papers, follow the board's schedule: if there is a gap of several days before a subject, use the first day for that subject's revision sheets and the remaining days for one timed paper and corrections.

Handling Practicals, Projects and Internal Assessment

Practical files, project reports and internal assessment usually fall due during Phase 2 or 3. Do not let them become a last-minute rush. Block one session each weekend for practical work, complete file entries the same week you perform an experiment, and keep a short viva list of five or six questions for each experiment, such as the aim, the principle and one precaution.

FAQs

Is 100 days enough if I have not studied much so far?

It is enough to make a large difference, but you need to be honest in Phase 1. Shorten Phase 2 slightly to give yourself more time on red chapters, and focus on high-frequency chapters that you can see repeating across official sample papers.

How many sample papers should I solve per subject?

Quality matters more than quantity. Two or three papers written under full time conditions and checked against the marking scheme teach more than ten papers solved casually. Use the official ones first because they reflect the current pattern.

Should I join a crash course in the last month?

Only if you know exactly which gap it fills. Many students lose more time travelling and sitting through topics they already know. Your own corrected papers usually tell you more about what to fix.

Where can I find the official date sheet and paper pattern?

On your board's official website. For CBSE, check cbse.gov.in for notices and cbseacademic.nic.in for syllabus, sample papers and marking schemes. Always read the current notice, as patterns can change between years.