Guess a billboard right over a school will naturally lend itself to more placement problems. Last time we mentioned the billboard over WS Montessori School, it was about a double-entendre; this time, it’s a business conflict … the billboard right over this private school is currently rotating an ad for a rival WS private school. Heh. (P.S. If you ever feel the need to know who owns a certain billboard, here’s another one of the city’s cool search tools.)