I'd say he is the suspect even though he values equal rights. He probably gave a starry eyed and boost the magic on Class D students so they can do whatever they want after getting expelled. When they became villains, He could blame both the Principal & The Deans that sacrificial education is erong and this is the results.
Are you saying he deceived me?(╯°Д °)╯╧╧ Maybe you’re right, the only suspicious thing I could think of is he asked solo sensei eye bags twice as if he forgot/didn’t know (twins? A few people in disguise?) he’s so strict and upright that would be great plot twists :D
Might be too obvious but the deans brooch is so suspicious also nagisa and previous teacher
Protect vice principal at all cost ╥﹏╥ （/TДT)/