Supreme Court decisions, New York State laws, and Fleischmann Commission findings all determine how New York may aid nonpublic schools. The Supreme Court has upheld a New Jersey law permitting reimbursement to parents for transportation of children attending sectarian schools. It also allowed a New York statute providing textbooks to both public and nonpublic school students. In 1971 the Court handed down the "Lemon Doctrine" summarizing the three tests for all state aid statutes: the statute must have a secular purpose, not advance nor inhibit religion, and not produce an excessive governmental entanglement with religion. By these criteria the court struck down a Rhode Island law giving a salary supplement to private school teachers and a Pennsylvania law reimbursing nonpublic schools for salaries, textbooks, and instructional materials. No Supreme Court decision has found that any state legislation passed all three tests. The Court also struck down a portion of a Pennsylvania law providing auxiliary services to nonpublic schools. State aid to New York nonpublic schools is made more difficult by a strict state constitutional prohibition. New York's Fleischmann Commission reaffirmed the Lemon Doctrine and concluded that vouchers, tuition grants, or student or parent aid plans would be unconstitutional. (Author/JM)