| 1997 |
Dr. Ned J. Sifferlen is appointed fourth president |
| 1998 |
- Montgomery County voters approve a 2.5 mil replacement levy to support the college
- Center for Interactive Learning and Automotive/ Environmental Technologies buildings open
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| 1999 |
For the ninth time in ten years, Sinclair Board freezes tuition for Montgomery County residents |
| 2000 |
- Provost Steven Lee Johnson is appointed
- The Learning Center opens at Miami Valley Research Park
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| 2001 |
- Sinclair named one of only 12 Vanguard Learning Colleges
- Sinclair renames Building 20 the John E. Moore, Sr. Technology Center
- Integrative Medical Massage Therapy program begins
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| 2002 |
- Sinclair celebrates 30th anniversary of modern day campus
- Sinclair President Dr. Ned J. Sifferlen announces retirement
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| 2003 |
Dr. Steven Lee Johnson appointed as Sinclair’s fifth president |
| 2004 |
Dr. Stephen Jonas, Vice President for Administration, retires after 20 years of visionary leadership |
| 2006 |
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| 2007 |
Sinclair opens The Courseview Campus Center in Mason |
| 2008 |
Montgomery County voters affirmed support for the college by passing a 10-year levy, assuring its future |
| 2012 |
The college switches from a quarter-based to semester-based academic calendar, beginning Fall 2012 |
| 2014 |
President and CEO Steven Johnson, and the Sinclair College Board of Trustees, were honored with the Exemplary CEO and Board Award of Excellence by the American Association of Community Colleges |
| 2015 |
The Unmanned Aerial Systems (UAS) Indoor flying pavilion opens as the nation's first permanent, custom-built flying facility for UAS training and applied research support in Building 18 |
| 2016 |
The UD Sinclair Academy, which allows students to begin studies at Sinclair and earn a bachelor's at the University of Dayton, celebrates its first graduating class |
| 2019 |
Sinclair begins fall semester with two new workforce aligned bachelor degree programs in Aviation Technology and Unmanned Aerial Systems (UAS) |
| 2020 |
- Sinclair ranks No. 4 Top Community College in Ohio by Schools.com
- Sinclair switches most in-person classes to remote, and offers virtual learning and student relief funding during the global Coronavirus pandemic
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