Thompson is currently listed at 6 feet, 11 inches, and 245 lbs He was one of three players in the NCAA in 2007 to average 20 points, and 10 rebounds per game. The other two were Kevin Durant of Texas and Nick Fazekas of Nevada.
As a senior during the 2007–08 season, Thompson averaged 20.4 points, 12.1 rebounds, 2.7 blocks and 1.1 steals per game. His strongest performance was on March 9, 2008 when he scored 32 points and grabbed 18 rebounds against Marist College. He led Rider to the 2008 Metro Atlantic Athletic Conference Tournament finale against Siena College a day later. Rider fell short in a 74–53 loss in which Thompson registered 22 points and 12 rebounds. Rider finished the regular season and conference tournament schedule with a strong 23–10 record, but still missed an at-large bid to the NIT. However, Rider did receive a bid to the inaugural College Basketball Invitational tournament in 2008. Rider lost its first round game to the Old Dominion UniversityMonarchs 68–65; Thompson finished with 15 points, 17 rebounds and 3 blocks.
^Carchidi, Sam. "Lenape's Thompson selects Rider", The Philadelphia Inquirer, October 21, 2003. "Senior Jason Thompson, a 6-foot-8 forward/center from Lenape High, has made an oral commitment to attend Rider University on a basketball scholarship, Indians coach Bill Lange announced yesterday." Accessed April 9, 2008.