Apparently, some things they did, or didn't do, are being kept from public disclosure. Why, if the true reasoning was a simple as the safety of the students, then simply publicly declare and state that? Defend their actions instead of say one thing publicly and privately do the opposite and then deny that,. The problem with conspiracy theories is that they often have some credence, especially when the subjects of those theories, act suspiciously when, if they were forthcoming honestly, there is no reason to do so,.