Guarantano represented one of two Bergen Catholic teams in the 7-on-7 passing camp two weeks ago and returned to Rutgers as a one-day camper to work up close with position coach Rob Spence.
"Rutgers is a great opportunity for me," Guarantano said. "I come down all the time. I love coming down. Being from New Jersey, growing up here, it's fun."
The 6-foot-3, 191-pound rising sophomore quarterback has been an active camper this summer at multiple schools and already holds a verbal scholarship offer from Rutgers coach Kyle Flood.
"The Rutgers camp, all of the camps, I feel like my mechanics have gotten a lot better," Guarantano said. "My throwing, my footwork, everything, I'm very grateful that I've been able to go to so many places and just get better."
Guarantano's father, Jim Guarantano, played for Rutgers in the early 90s and enjoyed a short stint in the NFL. He is sixth all-time in both catches and receiving yards in school history.
"There's no place like home really and my dad reminds me of that all the time," Guarantano said. "I always watch Rutgers with my dad. I love the coaches and it's exciting seeing all of the changes."
Guarantano took unofficial visits to Georgia, Penn State, Maryland and Virginia Tech during the offseason. Guarantano added Michigan State and Alabama as schools that have been in contact with his head coach, Nunzio Campanile.
"They've all talked about offers, but none of them have yet except Rutgers," Guarantano said. "A lot of schools have interest. … I grew up watching some of them like Penn State. I loved the atmosphere there and loved the stadium and the atmosphere."
Guarantano is expected to take over the reins at Bergen Catholic this season after last year's starter, Jon Germano, led the Crusaders to the state championship game and committed to Johns Hopkins for lacrosse.
"I'm working hard to be able to show my teammates that I'm ready," Guarantano said. "I always have their back and I'm ready to respond. I'm trying to make everybody else better, not myself."