[quote=@TwilightDragon]
Wow, the students have shit luck. Both the person who's supposed to be teaching them, the one who's supposed to protect them from harm, and their classmates are enemies...
[/quote]

Biggest problem I can see is that if the Servants are with their Masters when they're at school, they're all going to know the other servants are there (Besides Colt. But that's because he's a Modern Servant, so he can only pick up Mana if it's in large amounts as a result of Grail buff)