Yes, as long as the district has your consent, it must locate, identify, and assess all private school children with disabilities, including religiously affiliated school-age children, who have disabilities. Both the district in which you reside and the one in which the private school is located (if different) have “Child Find” obligations. You should make your written request for assessment to both districts, although only the district where you reside has responsibility to provide services to your child if he is eligible.  [34 C.F.R. Secs. 300.111 & 300.131; Cal. Ed. Code Secs. 56171, 56300, & 56301.]