Monday, Jan. 26, 2004Sex Education in Amherst A high school takes on a controversial play ByNATHAN THORNBURGH This Feb. 14, V won't stand for just valentine at Amherst Regional High School in Amherst, Massachusets. The local school board and superintendent last month approved a student request to stage The Vagina Monologues the night before Valentine's Day as part of a national campaign to call attention to violence against women. The theater piece, written by Eve Ensler, has played off-Broadway and in all-star benefits around the country and the world on Valentine's Day for the past six years. But this...