Question: Even if a prayer is non-denominational it's still considered what?
Sentence: In Engel v. Vitale, 370 U.S. 421 (1962), the Court, by a vote of 6-1, determined it unconstitutional for state officials to compose an official school prayer and require its recitation in public schools, even when the prayer is non-denominational and students may excuse themselves from participation.
Answer in sentence: yes