"I'm a Bruin," Brown said. "They offered me after week one of the season, after our game with Carson. About a week later, I went ahead and committed to them but we both decided to just keep it private for a while. I talked to them again today and we agreed it was cool to go public so there you go, I'm a Bruin.
"I'm very excited about UCLA. It's the hometown school and I've always liked them. They have a great staff and the team is definitely going in the right direction. I was at the Nebraska game and it was great to see how much emotion they play with. I think I'll fit in very well there and I like how they want to use me."
Brown plays linebacker for Poly but will play a hybrid linebacker/safety role for the Bruins.
"They want to use me the same way they use Stan McKay, who actually played here at Poly," Brown said. "It's kind of a combination between outside linebacker and safety. I'll be in the box and will play run support but will also be dropping back in to coverage too.
"Stan has been getting more playing time lately and he's doing very well. Dalton Hilliard is playing that position too. I don't know if you call it a rover or not but that's kind of what it is and like I said, it fits me really well."
Poly assistant coach Doc Moye said Brown has a lot of upside to him.
"He's a playmaker for sure," Moye said. "He can play linebacker and is a great tackler but he runs like a safety. He can cover backs or tight ends and creates a lot of turnovers. He has already caused five fumbles this year and attacks the ball carrier. With what UCLA does, he'll fit in great in their defensive packages so we're excited for him."