Temple University. Presidents of Central High School Alexander Dallas Bache – 1839–1842 John Seely Hart – 1842–1858 Nicholas Harper Maguire. – 1858–1866 George Inman Riché – 1866–1886 (19th Class) Franklin Taylor – 1886–1888 Henry Clark Johnson – 1888–1893 Robert Ellis Thompson – 1894–1920 John Louis Haney – 1920–1943 (100th Class) William Hafner Cornog – 1943–1955 (146th Class) Elmer Field – 1955–1962 (122nd Class) William H. Gregory – 1962–1969 Howard Carlisle – 1969–1983 (162nd Class) Sheldon S. Pavel – 1984–2012 Timothy J. McKenna – 2012–2022 Katharine S. Davis – 2022–present (264th Class) Guide to class numbers Since graduates are usually identified by class number, the year they graduated is not immediately apparent. This section explains the relation between class number and graduation date. The first class graduated in June 1842. Through much of the school's history, there were two graduating classes per year, in January and June. However, there was only one graduating class in June in some years, including all years after 1965. The following list details the correspondence between class number and graduation date. 1 June 1842 2 June 1843 3 January 1844 4 June 1844 … 2 classes per year … 75 January 1880 76 June 1880 77 June 1881 78 June 1882 79 January 1883 … 2 classes per year … 95 January 1891 96 June 1891 97 June 1892 … 1 class per year … 116 June 1911 117 January 1912 118 June 1912 … 2 classes per year … 223 January 1965 224 June 1965 225 June 1966 … 1 class per year … Thus, for classes graduating after 1965, if one knows the class number, one can determine the year of graduation by adding 1741. Conversely, if one knows the graduation year, one can determine the class number by subtracting 1741. Notable alumni References External links Current Central High School Web site Historical Central High School Web sites (from the Wayback Machine): September 4, 2010 thru March 21, 2011 November 19, 2000 thru August 13, 2010 October 9, 1999 thru February 6, 2001 April 11, 1997 thru April 20, 1999 The School District of Philadelphia Educational institutions established in 1836 High schools in Philadelphia Magnet schools in Pennsylvania School District of Philadelphia School buildings on the National Register of Historic Places in Philadelphia Public high schools in Pennsylvania History of Philadelphia 1836 establishments in Pennsylvania Logan, Philadelphia