A Warren County High School student is in critical, but stable, condition at Vanderbilt Medical Center after an accident during an organized four-wheeler race at the White County Fair.Rock Island resident Lake Hillis, a 10th-grader, was injured in the crash Thursday night.According to White County Fair president Mike Wilson, the accident took place while Hillis was competing in an Open 450 Class four-wheeler race at the fairgrounds. The race took place on a flat, circular track with no jumps.During the race, Hillis bumped wheels with another competitor and was thrown from his four-wheeler while traveling at a significant speed. He hit the ground head first which caused his injuries.“We had emergency personnel on hand and they were to him very quickly,” said Wilson.