my son dob 06 sept 2013 can admisson in cbse in 9th class in session 25-26

For CBSE admission in Class 9 for the 2025-26 session, the student should generally be 14 years old by March 31, 2025 .

Your son's DOB is 06 September 2013 , so by March 31, 2025, he will be 11 years and 6 months old , which is quite younger than the usual age requirement.

Most schools follow the 14-year age rule , but some may allow exceptions.

Hope it helps !