Not sure where you are getting your info. You may be right because I'm having a hard time finding the numbers throughout the history of the NFL draft. I did come across the following, though.
Miami has the most 1st round picks since 2000 with an ungodly 25. After Miami is Ohio State and Florida State (each with 13), Texas (12), Wisconsin, Tennessee, Penn State, Oklahoma, USC and Georgia (all with 8).
Texas has the most top 10 picks with 7. Miami has 5. Behind Miami is USC and FSU (each with 4), Penn State, Auburn, NC State and Ohio State (all with 3).
Texas has the most top 5 picks with 5 (Vince Young, Cedric Benson, Leonard Davis, Mike Williams and Quentin Jammer). Penn State has 3 (Levi Brown, Courtney Brown, Lavar Arrington) - two of those were from the 2000 draft. Auburn (Carnell Williams and Ronnie Brown - both RB's picked back to back in 2005), USC (Carson Pamer and Reggie Bush), NC State (Mario Williams and Philip Rivers) and Miami (Andre Johnson and Sean Taylor) each have 2.