In the Assam Higher Secondary Education Council (AHSEC) system, students are required to pass all subjects to be declared successful in their Class 12 examinations. The passing criteria are as follows:

Theory Subjects: A minimum of 30% of the total marks is required to pass.

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Practical Subjects: Students must secure at least 30% in the theory part and 40% in the practical part.

If a student passes five subjects but fails in one, such as Chemistry, they will not be considered to have passed the Class 12 examination. However, AHSEC provides an opportunity to clear the failed subject through compartmental examinations. This allows students to reappear for the specific subject they did not pass, rather than repeating the entire year.

It's essential to consult with your school authorities or refer to the official AHSEC guidelines for detailed information on the compartmental examination process and to understand the specific steps you need to take to clear the failed subject.