Okay, they sign a "nominal" statement. Then, only teachers that hold a specific belief and that are described as Christian teachers lead the discussions. Nah, nothing to worry about there, right? Students wouldn't be intimidated at all to disagree with their teachers who, one must assume, grade them? I hardly would expect those in the business of indoctrination openly to admit it. 
Well, if the rather obvious sexual organ question never occurred to you, I can understand your beliefs. Either man is in the image or not. So your god must have sexual and excretory organs. Or is the sacred text wrong about the design? How about that weekly creation time table? Until science a very few centuries ago rebutted it, unquestionably, penalties for doubting it were severe. 
Yes, actually, I'd have to agree with you about Islam, to some extent, though they don't have services where they worship a man nailed to a cross and have services where they eat the body and drink the blood of their savior.