The Grescollege in Reuver, Limburg, decided to remain closed on Tuesday after several parents and pupils threatened school employees on Monday and Friday. The police had to intervene. The school has filed charges, De Limburger reports.According to the newspaper, a student refusing to put away their phone in class on Friday sparked the situation. Instead of putting away their phone, they called for help. Parents and other students came to confront the teacher and threatened and harassed several school employees. The police intervened and calmed the situation. ....