A Surbiton school’s music and dining hall has been targeted by vandals who scrawled crude pornographic images on the outside of the building.

Passers-by on Sunday could clearly see the front of Surbiton High School’s Assembly Rooms, on the corner of Maple Road and Surbiton Hill Road, had been dawbed with cartoon depictions of male and female genitalia, as well as drawing of a baby.

A message on the side of the building read: “Forget Exams, Take Drugs”.

A spokeswoman for the school said the graffiti has since been removed and the incident was being investigated.