While many of these schools still existmost with low percentages of minority students even todaythey may not legally discriminate against students or prospective students based on any considerations of religion, race or ethnicity that serve to exclude non-white students. The laws that permitted their racially-discriminatory operation, including government subsidies and tax exemption, were invalidated by U.S. Supreme Court decisions. After "Runyon v. McCrary" (1976), all of these private schools were forced to accept African-American students. As a result, segregation academies changed their admission policies, ceased operations, or merged with other private schools.