It looks like you’ve shared a slightly garbled version of a title. Based on the recognizable fragments, you’re referring to the 2015 German family comedy-drama Help, I Shrunk My Teacher (original German title: Hilfe, ich hab meine Lehrerin geschrumpft ).
One evening, while hiding in the school basement to avoid a bully, Felix stumbles upon a mysterious old trunk belonging to a long-absent school founder. Inside, he finds a strange shrinking device – part science experiment, part magical relic. When Dr. Schmitt-Gössenwein catches him snooping, Felix accidentally zaps her with the device. She shrinks to the size of a pencil. It looks like you’ve shared a slightly garbled
But wishes have a way of backfiring.