In case of accidents or sudden illness requiring immediate action, call the general emergency number, tel. 112 (24 hours a day) or the Emergency Service at the hospital nearest to your home. For less urgent matters you call the police at 0900 8844. During day time you can ask your contact person for advice or come by at the Summer School office.
During the summer you can reach Utrecht Summer School also after office hours in case of emergency: +31 30 253 4400.