You found a tiny school in your house, you try shrinking it with your mind and it works, the school shrinks, and also, the students and teachers can't see you since a student was looking in your direction but didn't see you, you decide to mess with the school by shrinking it more, after it's barely even visible from the naked eye anymore, a student walks out, so you make them grow to 1/2 your size, and when the student turns around, they see the school really tiny in front of them, the students and teachers were terrified that a random student was absolutely massive and right in front of the school, the student sat down and picked up the school causing the students and teachers inside to panic