Section 12(3)(a) in Bihar Juvenile Justice (Care and Protection of Children) Rules, 2015
(a)(i)the matriculation and equivalent certificate along with copies of attendance record of class VIII attended by the juvenile or child; or,(ii)the date of birth certificate from the school (other than a play school) first attended; and in the absence whereof;(iii)the birth certificate given by the Municipal Corporation or a Municipal Authority or a Panchayat; and