CBSE FAQs - What do you mean by preponement of session?

Those schools that may have applied as per Byelaw norms for next session, but require to pre-pone the session of Affiliation to the current session, due to various reasons, are provided with an opportunity to pre-pone the session.

For example – The Board has taken applications this year for the session 2020-21, which implies that it can enroll students in classes IX/XI from the academic session of 20-21. However, if the school in question would like to obtain affiliation from the current session itself, that is, from 19-20, and would like to enroll in class IX/XI for Board exams in 2020, it shall be defined as preponement of session. Such a school can take advantage of the provisions of this circular.