ISC Class 12 FAQ: the most-asked questions

ISC (Indian School Certificate) is the Class 12 board examination conducted by CISCE - the Council for the Indian School Certificate Examinations. It is the senior-secondary counterpart of the ICSE (Class 10).

Compulsory English plus, typically, three to five elective subjects chosen by stream (one is usually an optional subject). SUPW is internally assessed and graded but not counted in the percentage.

Science, Commerce and Humanities. There is flexibility in subject combinations within CISCE regulations, so unusual combinations are possible if the school offers them.

Most theory papers are about 3 hours (some shorter), with a 15-minute reading time before writing begins.

No. ISC papers are short-answer, structured and long-answer in style - there is no negative marking.

You must score at least 35% in each subject (combined external + internal where the subject has an internal component). One subject below 35% fails the certificate.

It is generally computed on English plus the best three other subjects - the "best of four". A weaker fifth subject outside that set does not pull the headline percentage down, provided it is still a pass.

For subjects with a practical or project component, the external theory paper is 80% and the internal/practical assessment is 20% of that subject's marks.

No. ISC reports actual marks/percentages, not a 10-point CGPA. Universities read the percentage directly.

Indicatively: 60%+ first division, 45-59% second, pass at 35%. For competitive admissions, the practical bar is far higher (often 90%+ aggregate).

Regular students of CISCE-affiliated schools who have completed Class 11 and the required attendance/internal work, registered through their school. ISC is school-administered, not an open exam.

CISCE's norms for private/external candidates are limited and change periodically - verify the current regulation on cisce.org. Most ISC candidates are regular school students.

There is no fixed upper age bar in the way entrance exams have one; eligibility is driven by school progression and CISCE regulations.

Registration is done by your school to CISCE - you submit subject choices and internal work through the school; you do not apply individually to a portal.

Within Class 11/12 and CISCE rules, subject changes are possible through the school before registration is finalised - not after.

For subjects with an internal/practical component it is 20% of the subject score - cheap, bankable marks. Strong internals meaningfully lift the aggregate and reduce the theory bar.

Practical and project assessments are conducted before the theory window, typically January-February, and submitted/evaluated ahead of the written papers.

They combine with the theory mark for the 35% pass check. Weak internals plus a borderline theory paper can put a subject below the pass line - don't treat them as optional.

No. SUPW (Socially Useful Productive Work) is graded internally but is not added to the ISC percentage; it is still required for the certificate.

Both are recognised equally for university admission. ISC (CISCE) is known for depth and an English-language emphasis; CBSE is national and aligned to many entrance syllabi. The choice is usually the school, not the student.

ISC papers are often considered more analytical and language-heavy, but "harder" varies by subject. Marks are comparable for admissions; neither board is penalised in cut-offs.

Universities admit on the aggregate percentage regardless of board. A strong ISC best-four is treated on par with a strong CBSE percentage.

It is possible but disruptive (different syllabus and internal structure). Most students stay with their school's board through Class 12.

Very. ISC rewards answering to the prescribed structure within time. Full-length timed mocks in the real CISCE format build exactly that, and the post-paper review is where the marks improvement comes from.

Aim for 6-10 full-length timed papers per subject across the year, ramping up after the datesheet, plus chapter drills for weak topics.

Anyone selling "leaked" ISC papers or guaranteeing marks is running a scam. Report to your school and to CISCE via cisce.org. CISCE has zero tolerance for malpractice and cancels results for those involved.

Not objectively. ISC papers are more language-heavy and analytical, with longer essays and a higher share of long-answer marks; CBSE papers carry more MCQ and very-short-answer items. A strong ISC candidate writes long-form answers faster; a strong CBSE candidate works through objective items faster. The actual difficulty is comparable - universities treat the marks equivalently for admission.

The headline ISC aggregate is generally English plus the best three of the remaining subjects, averaged. A weak fifth or sixth subject is insulated from the headline percentage as long as it still passes at 35%. The overall pass certificate requires 35% in every subject entered and at least 40% aggregate across all subjects taken together.

Limited changes are possible if requested before candidate registration is finalised at the end of Class 11 - usually the optional subject can be swapped, or a language can be substituted. Larger changes (dropping a science to add a humanities subject, or moving between Maths and no-Maths Commerce) are almost never permitted because the syllabus gap is too wide and internal-work timelines have already lapsed.

CISCE reports actual marks across all subjects entered; the best-of-four convention - English plus the three highest-scoring other subjects - is the percentage universities and the candidate use as the headline aggregate. Some institutes look at best-of-five for specific programmes, but best-of-four is the dominant convention.

In almost all cases, no. ISC is administered through CISCE-affiliated schools and the council does not run an open private-candidacy stream the way some other Class 12 boards do. The exceptions are narrow: compartment or improvement re-attempts by previous ISC candidates, and school transfers cleared by CISCE.

A candidate who fails one subject in the main ISC cycle can apply for a compartment exam in the same calendar year - usually July - to re-attempt that subject under the same paper pattern. A pass in the compartment exam earns the regular ISC certificate. The application is made through the school within the window CISCE announces with the result.

Yes. ISC has long been one of the most internationally portable Indian Class 12 qualifications. UK universities accept ISC for direct entry where the offer specifies ISC marks; US universities accept the ISC certificate as completion of secondary schooling, with admissions then decided on SAT/ACT and the school transcript; Australian, Singaporean and Canadian universities accept ISC on stated band cut-offs.

CISCE typically releases the ISC datesheet for the upcoming February-March cycle in November or early December of the previous year - so the ISC 2027 datesheet should appear on cisce.org around November-December 2026. Practical exam dates are confirmed separately by each school once the theory datesheet is out.