Step Marking in Board Exams: How Examiners Award Marks

Step marking means a long answer is not marked as simply right or wrong. The examiner has a marking scheme that splits the marks across the steps of the answer, and you get the marks for every step you got right, even if the final answer is wrong. It is the main reason two students with the same wrong final answer can end up with very different marks.

What the CBSE marking scheme tells examiners

Every CBSE marking scheme opens with general instructions for evaluators. A few of them decide a lot of marks:

• The marking scheme gives only suggested value points. If a student expresses a correct answer in their own words, the marks are to be given.
• No marks are deducted for the cumulative effect of an error. A mistake is penalised only once, where it happens.
• If a question has parts, marks are written for each part separately and then totalled.
• If a student attempts an extra question, the answer that deserves more marks is kept and the other is crossed out as an extra question.
• Examiners are told to use the full range of marks and not hesitate to give full marks when an answer deserves it.

You can read these instructions at the top of any CBSE marking scheme on cbse.gov.in. They are worth five minutes of your time, because they explain exactly what the person checking your paper has been told to do.

A worked example from Class 10 Maths

Take a three-mark question: find the sum of the first 20 terms of the AP 3, 7, 11, and so on. A typical split in a marking scheme gives part marks for identifying a = 3 and d = 4, part for writing the formula Sn = n/2 [2a + (n − 1)d], part for substituting correctly, and the rest for the answer, 820.

Now look at two students who both get it wrong:

• Student A writes only "Sum = 802". The answer is wrong and there is nothing else to mark. Zero.
• Student B writes a and d, the formula, the substitution 10 × (6 + 19 × 4), and then slips in the arithmetic to reach 802. Student B loses only the mark for the final answer.

Same mistake, very different result. The difference is entirely in what was written down.

How it works in other subjects

• Physics and Chemistry numericals: the formula, the substitution with units, and the answer with its unit each carry marks. Missing units is one of the most common ways students lose half a mark again and again across a paper.
• Accountancy: working notes are marked. If your final balance is wrong but the working note shows the right method, you keep most of the marks. Without the note, the examiner cannot see the method.
• Theory answers in Science, Social Science and Economics: marks are given per value point. A five-mark answer usually needs five clear points, not one long paragraph that contains three of them somewhere.
• Diagrams: a correct diagram with labels can carry its own mark, even when the explanation next to it is thin.

ICSE, ISC and state boards

The idea is the same across boards, even when the details are not published. CISCE examiners work from a marking scheme too, and the yearly Analysis of Pupil Performance that CISCE releases lists, subject by subject, the steps students most often skipped. State boards give their examiners model answers with marks split by points. If you are writing ICSE or a state board, assume every step can earn a mark and write accordingly.

How to write so step marks can find you

• Write the formula or rule before you use it, every time, even when it feels obvious.
• Keep each step on its own line. An examiner checking hundreds of copies gives marks for what is easy to see.
• In numericals, carry units through the working and box or underline the final answer.
• If you are running out of time on a long question, write the method in two or three lines. A method with no final answer still earns step marks; a blank space earns nothing.
• Do not cross out working you are unsure of. If it is partly right, it may still carry marks; crossed-out work is usually ignored.

The fastest way to learn this is to see your own answers marked step by step. Gradehunt's board test series has your handwritten papers checked the way a board examiner would check them, with marks for each step and a note on what was missing.

For practice material, start with the solved CBSE Class 10 Maths past papers and compare your working with the solutions line by line.