"I had an idea that I was going to commit, and then I just did it," Parker said. "I committed to Coach (Demetrice Martin) and he was so excited that it got me even more excited about it."
Parker said that what sealed the deal for him was the atmosphere around the program.
"It's just a family up here," Parker said. "This was also my first offer, and we've just been the closest ever since. I love it up here. Just seeing the school, talking to the coaches, that made up my mind even more."
Parker, who's rated as the top cornerback in the West, is actually being pitched on the opportunity to play both ways at UCLA, which is something he's excited about.
"They've told me they see me as an athlete, a guy who can play both ways on offense and defense," Parker said. "I really want to do that in college, and they've got a great track record of using guys that way."
Parker had long been thought to be a package deal with fellow Bay Area defensive back Shurod Thompson, but when Thompson committed to California last week, it opened Parker up to breaking away from that package deal.
"When he committed, we were just talking, and I told him my look right now is UCLA," Parker said. "That's where I felt most comfortable."
Parker is still going to take a look around, with plans for a few more visits this spring.
"I'm still going to go everywhere," Parker said. "Recruiting is still open, I'm still going to take visits. But UCLA just felt right to me."