Reporter stated a student had a ramp excursion during taxi which resulted in the aircraft going into a ditch and incurring damage.

Narrative

A student pilot was taxiing the aircraft on the ramp in preparation for a student cross country flight. The student did not make a turn and taxied the aircraft into a drainage ditch. The aircraft came to rest with a damaged right main landing gear. The student pilot with a student certificate was endorsed by his flight instructor to conduct a VFR cross country flight from ZZZ [airport] to ZZZ1 [airport] and back. The flight instructor reviewed the flight plan remotely and endorsed via electronic means. Although the flight instructor was not present at the airport at the time of the flight; the flight instructor arranged for another CFI to review the flight and see the student off in person. The onsite flight instructor taxied the aircraft to from the south end of the airport and back to fuel the plane for the student. The student left the hangar ramp which requires the aircraft to taxi between two hangars and then make a right turn onto the main ramp. Witnesses and security camera footage shows the aircraft not making the turn onto the main ramp and taxiing with the right main gear traveling over a drainage ditch approximately 4 feet deep. A bolt holding the gear fractured causing the bottom of the strut to fall into the ditch and the plane coming to rest on the upper portion of the strut. The aircraft came to rest on the tail; main left gear and remainder of the strut and the right wing. There was not a prop strike. There does not appear to be any damage to the aircraft other than the strut; but the structure of the aircraft wing is still being examined. The student claims there was a problem with the right brake. Subsequent examination of the right brake did not show any signs of problems.