In the beginning, there was Public School 1. Then it got messy. There are actually four P.S. 1?s in New York City: That first school, established in 1806 and later named for Alfred E. Smith (Manhattan); the Courtlandt School (the Bronx); the Bergen (Brooklyn); and Tottenville (Staten Island). Plus, of course, the P.S. 1 in Long Island City, Queens, which now houses a contemporary-art museum. There are also three P.S. 2?s, three P.S. 3?s and four P.S. 4?s.