ISC Class 12 Exam Pattern 2027: Subjects, Marks and Paper Time
Content Curator | Updated On - Oct 27, 2026
The ISC Class 12 exam pattern for 2027 depends on the subject. English or Modern English is compulsory, and students take four or five electives. Most written papers carry 70 or 80 marks, with the remaining marks coming from practical work, project work or internal assessment.
CISCE has published the 2027 subject syllabuses. Each PDF gives the paper length, marks, sections and project or practical work for that subject.
ISC 2027 Exam Pattern
| Feature | 2027 position |
|---|---|
| Mode | Written school-board examination with practical, project or internal work where required |
| Compulsory subject | English or Modern English |
| Electives | Four or five |
| Maximum subjects | Six including the compulsory subject |
| Pass mark | 35% in a subject |
| Medium | English, except language papers |
ISC Subject Structure
ISC does not force one fixed Science, Commerce or Humanities group. Students choose from the subjects taught by their school, but university course requirements still matter. A student planning for engineering normally needs Physics, Chemistry and Mathematics. Commerce courses may need Accounts, Commerce, Economics or Mathematics, depending on the college.
Applied Mathematics (885) is available for Humanities, Commerce, Economics, Biosciences, Social Sciences and related fields. It cannot be taken with Mathematics.
Written Paper, Practical and Project Marks
| Examples | Written paper | Other marks |
|---|---|---|
| English, Mathematics, Accounts, Economics | 80 marks | 20 marks of project or internal assessment |
| Physics, Chemistry, Biology | 70 marks | 30 marks of practical work |
| Computer Science | Theory and practical parts as stated in the subject syllabus | Both parts must be completed |
| Art | Several practical papers | Paper-wise rules apply |
ISC English Paper Pattern
English has two written papers: English Language and Literature in English. The 2027 Language paper covers composition, directed writing, proposal writing, grammar and comprehension. Directed writing may include a feature article, book review, blog, newspaper report or statement of purpose.
Literature in English uses the prescribed drama, short stories and poems. Internal assessment covers listening, speaking and writing tasks under the official syllabus.
Science and Mathematics Pattern
Physics, Chemistry and Biology have a 70-mark theory paper and 30 marks of practical work. Mathematics and Applied Mathematics have an 80-mark theory paper and 20 marks of project work. The two Mathematics subjects have different topic sets and cannot be chosen together.
Paper Time and Reading Time
The 2027 timetable will show the final time for every paper. In the 2026 timetable, most papers lasted three hours. Students received 15 minutes to read the paper before writing time began.
Use the ISC syllabus page for complete topics and the 2026 question papers to see the paper layout.
ISC Class 12 Exam Pattern FAQs
Is every ISC subject out of 100 marks? +
The final subject score uses 100 marks, but the written, practical and project split changes by subject.
How many subjects can an ISC student take? +
English or Modern English plus four or five electives, with no more than six subjects in total.
Can Mathematics and Applied Mathematics be taken together? +
No.
Does ISC give reading time? +
The 2026 timetable gave 15 minutes. The 2027 timetable will confirm the new paper instructions.
What is the ISC pass mark? +
The pass mark is 35% in a subject.
*The article might have information for the previous academic years, please refer the official website of the exam.