He was dominant as a cornerback, showing very good cover skills with an ability to be physical at the line of scrimmage.
Of course, Barnwell's exploits are already well known by the Scarlet Knights coaching staff, which has seen him play in person and also had him come to watch practice.
"I talk to Rutgers a lot," the 5-foot-11, 180-pound Barnwell said. "That's the only coaching staff I've spoken to so far. I've been going to Rutgers games for a long, long time. I like how they run things, I like how their facilities are, I like how the coaches treat their kids.
"I got to go there for practice, and I like the drills they do. It's a great environment."
Barnwell plays quarterback and cornerback for Piscataway, and teams with class member and Rutgers target Kyle LaPorte to make a dynamic duo in the Chiefs secondary.
Rutgers is the only school recruiting Barnwell, but that figures to change in the summer and fall when more schools begin to focus on the 2013 class.
However, before then the Scarlet Knights are using the time to build a strong relationship with Barnwell, who isn't sure whether he wants to play cornerback or somewhere on offense in the future.
"I've always played both sides of the ball," he said. "I always liked hitting, and I always liked the ball in my hands. When I'm on defense, I love defense. When I'm on offense, I love offense."
A potential interesting sidelight of Barnwell's future will be the sport he plays.
In addition to excelling on the football field, Barnwell plays center field for Piscataway's baseball team.
"If any college offered me for baseball, I would take that into consideration," Barnwell said. "I like baseball."