Hello,
Entrance exam for Sainik Schools are conducted by Sainik School society and you can take admission only after 5th standard in 6th standard or in 9th standard after 8th standard.
So,we can't take admission in 7th standard but this leaves us about 2 years and you can help your brother practice and study ,clear all the basic concepts.After 8th standard your brother can fill the form and appear for examination.
AISSEE marking scheme for Class IX is tabulated below:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile