In the engle v. vitals case of 1962, what did the supreme court rule was unconstitutional? segregation prayers led by students on their own time

The Supreme Court ruled that it was unconstitutional for State Officials to compose an official school prayer and encouraged its recitation in Public Schools.

The prayer that was in question was: Almighty God, we acknowledge our dependence upon Thee, and we beg Thy blessings upon us, our parents, our teachers and our country. Amen.

The Court ruled that government-written prayers were a violation of the U.S. Constitution and the Establishment Clause of the first amendment. The Court explained the importance of separation between church and state but emphasizes that the use of "Almighty God" still promotes specific religions that recognizes those terms which still violates the Establishment Clause.