Advocates of School Vouchers Heartened by Ruling
Advocates for use of school vouchers in New York area are heartened by Wisconsin Supreme Court ruling permitting use of taxpayer money to pay religious school tuition; proponents say they are encouraged by ruling that Milwaukee voucher program giving tuition money to parents, rather than directly to parochial schools, does not violation First Amendment's separation of church and state; some advocates in Connecticut, New York City and New Jersey comment (M)