1979
-OTID officially charted by President Steven Muller and placed under the supervision of Provost Dr. Richard Longaker
1980
-Birth of summer residential program: site opens at St. Mary's College, St. Mary's City, Maryland
1982
-New OTID sites are upended at Dickinson College, Carlilse, PA and Franklin and Marshall College, Lancaster, PA
1983
-OTID named CTY
-CTY's West Coast Office is opened
1984
-CTY has year-round programs in 8 locations
-EWT, The Expository Writing Tutorial-by-Mail is initiated
1985
-Young Students classes begin at The Johns Hopkins University
1986
-New summer site opened at Skidmore College in Saratoga Springs, NY
1989
-CTY opens site at College de Leman, Geneva, Switzerland (site is no longer active)
1990
-New site opens at Wheaton College, Norton, MA (site is no longer active)
199?
-Amherst, NY site opened (site is no longer active)
-New site opens at Hamilton College, in Clinton, NY (site is no longer active)
-New site opens at Loyola Marymount University, in Los Angeles
-CTY-Ireland starts
-CAA is started
1997
-CTY Changes name to IAAY
2000
-IAAY changes name back to CTY
2001
-Hamilton Site moves to Union College in Schenectady, NY
-After many years, the St. Mary's College site is re-opened.
2002
Union College site moves to Siena College in Loundonville, NY
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