The older altar has a puzzling inscription, "Nos nos oraque Deo." Please send an explanation to cjmcmann(at)msn.com
James Sullivan has added a helpful comment. Many thanks! What I took as the letter o (after the second s) could well be a t with a curl. Then it would read, Nos nostraque Deo, We and ours to God, nostra being neuter nominative plural. I wonder what the lowest seven letters read. By clicking on the photo, you may enlarge it.
Good Shepherd Catholic Academy is at 1943 Brown Street, Brooklyn NY 11229, telephone 718-339-2745. Its website is linked here. The above photo faces north, towards the church at Avenue S.