HELLO,

If you want admission to 9th grade under the CBSE board in Andhra Pradesh , visit nearby CBSE affiliated schools during the admission period that is generally from January  to April or you can check the official websites of the schools in which you are interested for admission if they are accepting the admissions now .

After deciding the school and getting information about admission deadline from the school you can fill out the admission form with documents submission like your previous report card , transfer certificate and birth certificate , they make take entrance test or interview to confirm your admission

To know more visit :- https://school.careers360.com/schools/cbse-schools-in-andhra-pradesh

Hope this Helps!