The flight instructor reported that, while the student pilot was practicing soft field takeoffs, the student added full power and maintained back pressure. He told the student to add right rudder, but the airplane veered left. The instructor told the student to add right rudder again, then the student abruptly added right rudder. The airplane veered to the right, the instructor attempted to correct, but the airplane exited the runway to the right, and the right wing and right horizontal stabilizer impacted the ground.

The airplane sustained substantial damage to the right wing and right horizontal stabilizer.

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