1993
- Fall: Steve Loflin, then-director of Student Activities at The George Washington University, has conversation with two friends Chris Ferguson and Erin Corrigan about the possibility of starting a national honors organization for first- and second-year college students
1994
- 30 April: First NSCS Induction at The George Washington University
1995
- Spring: NSCS flagship program-Planning for College Success launched
- Spring: Second NSCS chapter; the University of Virginia
- Spring: Third NSCS chapter; the University of South Carolina
1996
- Spring: Three new chapters:
- The Florida State University
- The University of California, Los Angeles
- University of Delaware
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July: First NSCS Leadership Summit-Washington, D.C.
1997
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Spring: NSCS holds Inductions welcoming members at three new chapters
- The University of Texas, Austin
- The University of Maryland, College Park
- Carnegie Mellon University
- July: Second NSCS Leadership Summit-San Diego, CA
1998
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July: Third NSCS Leadership Summit-Boston, MA
- September: First National Student Representative elected to NSCS Board of Directors-Susie Albrecht
- October: The NSCS Honorary Board of Regents established
1999
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January-June: NSCS goes from 9 to 43 chapters
- Spring: Cornell University chapter established
- July: Fourth NSCS Leadership Summit-Chicago, IL
2000
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Spring: Dartmouth chapter established
- July: Fifth NSCS Leadership Summit-Los Angeles, CA
2001
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Spring: Princeton University chapter established
- July: Sixth NSCS Leadership Summit-Orlando, FL
- September: First NSCS National Leadership Council elected (1st president-Andrew Call)
2002
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Spring: NSCS Professional Leadership Council established
- Spring: University of Pennsylvania chapter established
- July: Seventh NSCS Leadership Summit-Austin, TX
2003
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July: Eighth NSCS Leadership Summit-Washington, D.C.
2004
- February: NSCS joins the Association of College Honor Societies, an accrediting organizations for
honor societies
- Spring: University of Puerto Rico chapter established
- Spring NSCS establishes its 200th chapter at the University of Hawaii Manoa
- 30 April: NSCS celebrates its tenth anniversary
- July: Ninth NSCS Leadership Summit-Washington, D.C.
2005
- Spring: With the establishment of a chapter at the University of Alaska, Fairbanks; NSCS now has chapters in all 50 states, DC, and Puerto Rico
- July: Tenth NSCS Leadership Summit-Denver, CO
2006
- July: Eleventh NSCS Leadership Summit-Louisville, KY
2007
2008
2009
- January: First NSCS China Professional Training & Language Academy launched
- February: NSCS launches I Stand for Integrity Week
- August: Third NSCS Member Convention & Leadership Summit-Washington, D.C.