Actually in my school, I go to the dining hall to have meals. But we have electronic stoves, a microwave, an oven, some toasters, etc. in the kitchen of my boarding house.
Girls in boarding school will have their main meal with school. However, if they want to have noodles after dinner, most of the school allow them to boil water with kettle and cook the noodles with microwave. Sometimes girls will got their own kettle and ricecooker to cook their own. However, they need to hide them away from the tutor.
Hope the informarion can help you:)