This is a pretty decent site to gain more information on schools that have programs, and it contains mostly good links to those programs' sites.
http://www.nassm.com/
http://www.nassm.com/InfoAbout/SportMgmtPrograms/United_States
As background:
I graduated from the Univ. of Michigan with a Sport Management & Comm. BA, and was lucky enough to intern with a small, private D1 school in administration. One year following that, I obtained a position full-time in the department at the Ticket Manager (ticketing operations for basketball, sales/fundraising, event management), which is where I still am. Thought about going for an SM Masters, but talked to several people high up in the field (both collegiate and professional) and the overwhelming opinion is that an MBA is a better degree to have at the professional level - I am taking MBA classes part-time.
However, for someone looking to get into the sport field directly, if you have the undergraduate business degree (mine wasn't actually a B-School degree, although it had business emphasis), then you could look at a Masters in Sport Mgmt.
Top Schools from my research:
Very much business-oriented approach, top tier academic:
-UMass
-Oregon
-Ohio University
-Florida
-Texas
Very good well-rounded schools, collegiate athletics/recsports focus:
-Northern Colorado (have their own Sport Marketing Research Center, and great people here)
-UConn
-Springfield
-Several schools in the Wisconsin state system
-Bowling Green
-Ohio State
-Old Dominion
-Southern Illinois
hope that helps, let me know if you have questions.
-GH
www.ClubRunning.org