"The summer is going really well," Shepherd said. "We just had a passing league at USC, which we almost won. It was a great experience for everyone.
"We're going to Mater Dei this week and we're just trying to build off our previous performance."
Shepherd is pleased with the recruiting attention he's receiving, but isn't ready to trim his list.
"I'm open to everyone," Shepherd said. "I really can't name a top list because I'm very appreciative of everyone recruiting me and I don't want to leave anyone out. The only thing I know is I will probably stay in the Pac-12."
One Pac-12 school that has been aggressively recruiting Shepherd is Arizona.
"I've been in touch with the Arizona coaching staff," Shepherd said. "They call me every week they are allowed to and they just let me know they really want me.
"They've been really cool and I would like to take a look at the school and see what's going on."
Although Shepherd would like to check out more schools, his main priority is to improve his football skills.
"I'm just trying to work as hard as possible at everything," Shepherd said. "Physically, I want to get stronger and continue to work on my quickness at speed school.
"Mentally, I want to really focus on a being a leader and making sure I'm holding up my end of the deal and making sure others are as well."
Recruiters shouldn't expect an early decision from Shepherd.
"I don't have a strict time frame," Shepherd said. "I doubt I will decide this summer, but I would like to decide sometime during the season, if possible."