Hello Aspirant ,

Yes , Your  brother is eligible for  class 6 admission in Sanik school through AISSEE 2023  ,  age requirement for class 6 admission is between 10 to 12 years of age ( must be born between 1 April 2011 and 31 March 2013) and since your brother will be 11 years of age he fulfils this criteria .

Both boys and girls are eligible for class 6 admission and only Indian students will be allowed for Admission.

For more details about AISSEE visit :

https://school.careers360.com/exams/aissee#selectionprocess

Hope this Helps.