In 1962 the court said officially sponsored prayers or religious statements in public schools violate the First Amendment's ban on any ``establishment of religion.''
In 1963 the court banned state-sponsored reciting of the Lord's Prayer and reading of the Bible as part of devotional exercises in public schools.
In 1980 the court outlawed the posting of the Ten Commandments on classroom walls in public schools.
In 1985 the court outlawed daily moments of silence if public school students are encouraged, as they were in an Alabama law, to pray during that time.
In 1990 the court ruled that public schools generally must allow student prayer groups to meet and worship if other student clubs are permitted at school.
In 1992 the court prohibited clergy-led prayers at public school graduation ceremonies.
WASHINGTON, June 19 (AP)--Previous major Supreme Court decisions on school prayer and religious observances: