I would suspect a combination of hypocricy and cowardice.
Au contraire, the liberals would probably invite a Muslim student to lead the class in reciting verses from the Quran. BTW did you know that merely repeating the Shihada "There is no hog but allah, etc." even if tricked into it, YOU ARE AUTOMATICALLY A CONVERT TO ISLAM and subject to the death penalty under Sha'aria law as an apostate if you continue to observe your normal religion?