Hello!
You could make your hook more interesting by adding more descriptive language and steady suspense. Instead of “a student walks into a school”, which sounds fairly ordinary, you can immersify the reader by replacing words such as “walks” with “steps”. You could also add more description on the setting, such as if her steps are making any echos or noises, or if the school is dark and empty, etc. I can help you more if you need me to, just comment below.