Founders (Spring 1989)
Dan Carlisle, Kui-Suk Choi, Kris Halvorson, John Watson, Dave Sokolosky

Alpha (Fall 1989)
William Aukett, Dennis Luhala, Steve Nickerson, Chris Parkinson, Rob Simpson, Matt Woolsey

Beta (Fall 1990)
Jeff Barnett, Chris Beckdolt, Adam Gardner, Matt Larson, Patrick Murphy, Steve Pennington, Pat Ryland, Eric Werner
Christopher Richardson joined along with this class, but was a transfer from "HM"

Gamma (Fall 1991)
Greg Barnett, Mickey Monaghan

Delta (Fall 1992)
Matt DeCample, Ken Michie, Jon Shipley, Chris Werner

Epsilon (Fall 1993)
Jennifer Baker, Douglas Higbee, Josh De Mers

Zeta (Fall 1994)
Jennifer Dittrich, Shawn Kennicutt, Jennifer LeRose, Kim Nicholson, Travis Robinson, Tara Starr

Eta (Spring 1995)
Roger Arnold, Becky Erickson, Brian Grabinski, Carmen McDonald, Meghan Solak, Rich Staley

Theta (Fall 1995)
Gerry Austin, Daryl Bolejack, Shana Pennington, Allen Weiss, Phil Zitzelman

Iota (Spring 1996)
Anthony Gonsalves, Peter Jones, Ross Montgomery, Amy Ostraat, Jason Sears

Kappa (Fall 1996)
Joe Marquiss, Richie Oliver, David Reiff, Nick Rounds, Jason Schoonover, Meghan Visser

Lambda (Spring 1997)
Nicole Hurlock, Megan Metcalf

Mu (Fall 1997)
Jen Havig, Bryan Long, JR Salmon, Jeff Sutton

Nu (Fall 1998)
Tami Barkstrom, Ellen Clarke, Norina Cowles, Anika Dansie, Jeff Havig (Honorary), Alicia Lane, Michael Langford, Tegan Larsen, Mike Niemer, Jessica Rounds

Xi (Fall 1999)
Kyla Bailey, Erin Dineen, Cory Haugen

Omicron (Spring 2000)
Christina Brockman, Tony Cole, Brian Maguire, Lauralee Petersen

Pi (Fall 2000)
Valerie Backhaus, Jeff Dunlap, Amanda Goff, Faith Matthews

Rho (Spring 2001)
Kimberly Berg, Scott Carson, Tiffany Pendleton

Sigma (Fall 2001)
Tracy Odom, Elsbeth Stebbins, Natalie Washington <\p>

Tau (Fall 2002)
Mike Brown, Cinnamon Demmon, Matt Horstman, Becky Jose, Nicole Kellar, Drew Moore, Todd Mosebar, Marcie Mulhbeier, Mark Nesteroff, Claire Phelps

Upsilon (Spring 2003)
Jeff Peterson, AJ Marino, Le Anne Spragg, Christine Baker, Meghan Rassumsen, Nickkea Jones, Jared Bailey, Jason Riemer, Casey Cushman, Doniell Cushman, Greg Alice, Molly Richter

Phi (Fall 2004)
Kristen Steck, Weston Stover, Jared Thorson

Psi (Fall 2005)
Annelise Horstman

Alpha Alpha (Spring 2006)
Ryan Russell, Gilbert Heerhartz

Alpha Beta
Raymond Aflakian, Jessica Parsons

Alpha Gamma (Fall 2007)
Tiffany Braford, Amanda Brennan, Evan Burns, Sarah Horstman, Michael Jenson, Sonja Kolstoe, James Marth, Jon Napier, Lani Peterson, Kimberly Ridenhour

Alpha Delta (Spring 2008)