Before college and the NCAA Frozen Four

Breaking down where the players of the 2010-2011 Frozen Four came from right before college:

Total:
USHL: 46
USNTDP: 16
AJHL: 12
NAHL: 7
BCHL: 6
Minnesota High School: 5
OJHL: 4
MJHL (Manitoba): 2
Prep School: 2
EJHL: 1
GHJHL: 1
J20 SuperElit Sodra (Sweden): 1
NPHL: 1

University of Minnesota-Duluth Bulldogs
AJHL: 4 (Brady Lamb (Calgary), Mike Connolly (Camrose), Wade Bergman (Olds), Justin Fontaine (Bonnyville)
BCHL: 1 (Cody Danberg (Nanaimo)
Minnesota High School: 3 (Dan Delisle (Totino-Grace), Chad Huttel (Hermantown), Christian Gaffy (Forest Lake)
NAHL: 3 (Kyle Schmidt (Fairbanks), Mike Montgomery (Southern Minnesota), Kenny Reiter (Fairbanks)
Prep School: 1 (Joe Basaraba (Shattuck-St. Mary's (MN))
USHL: 12 (Scott Kishel (Sioux Falls), Drew Olson (Omaha), Travis Oleksuk (Sioux City), Jack Connolly (Sioux Falls), Keegan Flaherty (Fargo), Jake Hendrickson (Sioux City), Mike Seidel (Cedar Rapids), Max Tardy (Tri-City), Luke McManus (Tri-City), JT Brown (Waterloo), David Grun (Sioux Falls), Aaron Crandall (Des Moines))
USNTDP: 2 (Trent Palm, Justin Faulk)

University of Michigan Wolverines
BCHL: 1 (Ben Winnett (Salmon Arm)
EJHL: 1 (Adam Janecyk (Green Mountain & Bay State)
J20 SuperElit Sodra (Sweden): 1 Carl Hagelin (Sodertalje)
NAHL: 2 (Scooter Vaughn (St. Louis), Shawn Hunwick (Alpena))
OJHL: 3 (Brandon Burlon (St. Michael's), Louie Caporusso (St. Michael's), Lindsay Sparks (Oakville))
Prep School: 1 (Luke Glendening (Hotchkiss (CT))
USHL: 7 (Greg Pateryn (Ohio), Chad Langlais (Lincoln), Lee Moffie (Waterloo), Derek DeBlois (Cedar Rapids), Jeff Rohrkemper (Sioux Falls), Bryce Hogan (Lincoln), Mac Bennett (Cedar Rapids))
USNTDP: 8 (Kevin Clare, Luke Moffatt, Chris Brown, Kevin Lynch, Matt Rust, AJ Treais, Jon Merrill, David Wohlberg)

University of Notre Dame Fighting Irish
BCHL: 1 (Shayne Taker (Cowichan Valley)
GHJHL: 1 (Riley Sheahan (St. Catherine's))
Minnesota High School: 1 (Brian Brooke (Eden Prairie))
NAHL: 2 (Nick Condon (St. Louis), Joe Rogers (Albert Lea))
OJHL: 1 (Richard Ryan (St. Michael's))
USHL: 16 (Jared Beers (Cedar Rapids), Jeff Costello (Cedar Rapids), David Gerths (Green Bay), Ryan Guentzel (Sioux Falls), Mike Johnson (Cedar Rapids), Nick Larson (Waterloo), Joe Lavin (Omaha), Anders Lee (Green Bay), Kevin Lind (Tri-City), Billy Maday (Waterloo), Kevin Nugent (Tri-City), Calle Ridderwall (Tri-City), Ben Ryan (Des Moines), Steven Summerhays (Green Bay), TJ Tynan (Des Moines), Mike Voran (Sioux Falls)
USNTDP: 5 (Sam Calabrese, Patrick Gaul, Stephen Johns, Sean Lorenz, Bryan Rust)

University of North Dakota Fighting Sioux
AJHL: 8 (Andrew MacWilliam (Camrose), Corban Knight (Okotoks), Derek Rodwell (Okotoks), Dillon Simpson (Spruce Grove), Matt Frattin (Fort Saskatchewan), Carter Rowney (Grande Prairie), Brad Eidsness (Okotoks), Aaron Dell (Calgary))
BCHL: 3 (Chay Genoway (Vernon), Evan Trupp (Penticton), Brett Hextall (Penticton))
Minnesota High School: 1 (Brock Nelson (Warroad)
MJHL: 2 (Taylor Dickin (Selkirk), Brent Davidson (Neepawa))
NPHL: 1 (Tate Maris (Bozeman))
USHL: 11 (Derrick LaPoint (Green Bay), Danny Kristo (Omaha), Mike Cichy (Indiana), Mario Lamoureux (Tri-City), Brett Bruneteau (Des Moines), Jason Gregoire (Lincoln), Joe Gleason (Des Moines), Brad Malone (Sioux Falls), Ben Blood (Indiana), Jake Marto (Omaha), Ryan Hill (Sioux Falls))
USNTDP: 1 (Derek Forbort)

The 46 players representing each USHL team:
Sioux Falls 8
Cedar Rapids 6
Tri-City 6
Des Moines 5
Green Bay 4
Omaha 4
Waterloo 4
Lincoln 3
Indiana 2
Sioux City 2
Fargo 1
Ohio 1