The glider flight instructor reported that, while on final approach for the grass field adjacent to the runway with the student pilot on controls, a gyrocopter lifted off towards the glider. The student maneuvered away, then continued the approach. During the landing the student flared too high, and despite the instructor's intervention, the glider landed hard.

The glider was not damaged, however, the flight instructor sustained a serious injury.

The instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.