Mills High School English teacher David Lista, 35, of Belmont has admitted to filming underage girls using the bathroom at the high school where he taught. it seems he was arrested yesterday afternoon after a Mills technology coordinator came across Lista's cinematic restroom work while checking the school computer server. Police then searched Lista's home, which turned up a "small amount" of methamphetamine as well. Ouch. But this wasn't the first time Lista's alleged......