On February 26, 2003, about 1530 eastern standard time, a Cessna 172N, N733XP, was substantially damaged during a touch-and-go landing at the Cincinnati-Blue Ash Airport (ISZ), Cincinnati, Ohio. The student pilot was not injured, and visual meteorological conditions prevailed. No flight plan was filed for the local solo instructional flight conducted under 14 CFR Part 91. According to a Federal Aviation Administration inspector, the student pilot stated that when the airplane touched down, he advanced the throttle to the takeoff position. The airplane then veered left, exited the runway, and impacted a snow bank. Examination of the wreckage revealed that the nose wheel was collapsed and the firewall was deformed. The pilot did not experience any mechanical problems with the airplane, and no preimpact failures were identified during the examination of the wreckage.