Slade is the No. 30-ranked prospect overall in his class and is the third top-30 commitment in 2018 for Penn State. He is joined by defensive end Micah Parsons (No. 5 overall prospect) and quarterback Justin Fields (No. 8 overall).
The commitment also gives Penn State eight ESPN Junior 300 commitments in the 2018 class, the most at this point of any FBS program in the country. Miami is next with six, and Florida State, USC and Notre Dame each have five.
Slade is the No. 2 running back in the class and received offers from many top programs, including Clemson, Ohio State and Florida.
A standout at C.D. Hylton High in Woodbridge, Virginia, Slade rushed 164 times for 1,509 yards and 16 touchdowns as a junior this past season.