NEW DELHI: The Central Board of Secondary Education (CBSE) has officially released the subject-wise marks bifurcation and distribution structure for the Class 10 and Class 12 board examinations 2027. Aimed at helping students prepare efficiently and minimizing errors during marks uploading by schools, the comprehensive circular outlines the exact split between theory papers, practicals, projects, and internal assessments.
​Key Highlights of CBSE Class 10 Marks Distribution (2027)
​For a majority of major Class 10 subjects—including English, Hindi, Mathematics (Standard and Basic), Science, and Social Science—the total evaluation stands at 100 marks:
- ​Theory Paper: 80 marks
- ​Internal Assessment: 20 marks
​However, alternative schemes apply to specialized and vocational subjects:
- ​Home Science: 70 marks for theory and 30 marks for practical/internal assessment.
- ​Skill-Based Subjects (Computer Applications, Information Technology, AI, Data Science): Equal 50:50 distribution (50 marks for theory and 50 marks for practical).
​Key Highlights of CBSE Class 12 Marks Distribution (2027)
​For Class 12 board examinees, the mark divisions vary significantly depending on the academic stream:
- ​Science Stream (Physics, Chemistry, Biology, Computer Science): The theory paper accounts for 70 marks, while practical components account for 30 marks.
- ​Humanities and Commerce (Mathematics, Economics, History, Political Science, Business Studies, Accountancy): Typically follows an 80:20 split, with 80 marks allotted to theory and 20 marks reserved for project work or internal assessment.
- ​Vocational & Specialized Subjects: Subjects like Retail, Web Applications, and Informatics Technology carry 60 marks for theory and 40 marks for practicals.
​Practical Exam Dates & Guidelines
​According to the official schedule, practical examinations and internal assessments for regular-session schools are slated to run from January 1 to February 13, 2027. For winter-bound schools, the exams are scheduled between November 9 and December 19, 2026. CBSE has also issued strict instructions warning that once marks for practicals and internal assessments are uploaded by schools, no modification or correction requests will be entertained. Students can download the detailed marks bifurcation PDF directly from the official website, cbse.gov.in.
