That's because it's the separation of church and state, not temple and state.
Or some similar quarter-assed argument.
According to board member Michael Queen, when Mr. Sklar was asked by the principal “to organize an effort to help the school develop a ‘Wall of Great Teachers’ to include other religious figures,” he declined. Mr. Queen believes that both the ACLU and Americans United were being “very selective” about what they considered a violation of the Establishment Clause. He notes that both groups had no objections to a two-foot statue and a portrait of Buddha that remain displayed in two classrooms in the school. (The settlement does not affect these two religious items.) “If they wanted to make it religion-free, why didn’t they go through the entire school?” Mr. Queen asks. It would seem that some religious symbols are bigger violations of the Establishment Clause than others.
I'm not particularly concerned that litigious bedwetters like the ACLU and Americans Utd. hate my religion. I just wish they'd be honest enought to admit they hate only my religion.