Central Board Of Secondary Education [CBSE] — Admission not given 12th class

Address:

Tadye colony Ashoknagar Madhya Pradesh

My name ansum Soni from Ashoknagar MP My Brother passed 11th class he take admission in another school but schools say I have not given admission because as per CBSE rules student passed 11th another school not admit 12th in my school. This is Shivpuri Public School Ashoknagar Madhya Pradesh. So please update about me such type of rules