I'm intrigued so far, I know you probably put tons of work into this so I don't want to criticize much. But at the same time I wanna mention a few things that could have been improved. That dark transition when the girls are going through the doorway with the footsteps dragged on a bit too long. The initial situation for why the girls got into trouble seemed a little forced, I mean who makes a scene out of the blue in the classroom on purpose then gets worried afterwards as if they didn't know what would happen. Would have been better if they got a laugh from the class or had some smug expressions when they were caught since they knew what they were doing.
Otherwise though, the weird blend of settings and scenes is interesting for me so far. No idea if i'll like the direction it goes, but it looks like you have some cool bad guys set up and some secret admirer love interest set up.
PS: art style is really cute as well.