Dean made his announcement on Fox 23 in Houston Thursday night.
"It feels good," Dean said to the television station. "I'm excited about and happy and satisfied with my decision."
When he told UCLA Head Coach Rick Neuheisel he had decided on UCLA, Neuheisel said, "It's game time."
Dean verbally committed to UCLA last April, but then re-considered after Karl Dorrell was fired in December.
He had a huge senior season, rushing for 2498 yards, averaging 7.4 yards a carry and scoring 26 touchdowns. He Katy to the Class 5-A/Division 2 State Championship.
He moved up from the #22 running back in the country to #6.
He then took his official visit to UCLA last weekend, and there were reports that he strongly indicated he was going to re-commit to UCLA.
Dean re-committing makes it 23 recruits that are verbally committed, or soft verbals to UCLA.
National Signing Day is Wednesday, February 6th.