1921 - Dr. Edward Rynearson, principal of the Fifth Avenue High School in Pittsburgh, PA, founds the National Honor Society (NHS), with the support of the National Association of Secondary School Principals (NASSP).

1932 - PASC formed by high schools in Altoona, Ebensburg, State College, and York

1934 - First State Conference held at Altoona High School

1942-1944 - World War II causes no state conference to be held due to lack of gasoline for travel

1947 - PASC reorganized.  Paul Landis, Greensburg-Salem HS advisor, becomes first Executive Secretary

1952 - First state officers elected by schools: President, First VP, Second VP, Secretary, Treasurer; Summer Leadership Workshop program begins at Penn State (Program later expands and moves to Grove City College and West Chester State College)

1955 -  NASC national conference held in PA at Lower Merion HS

1957 - NASC national conferences held at Schenley HS

1967 - NASC national conference held at Abington HS

1972 - PASC begins separate workshop for junior high students at Shippensburg University

1973 - State officer positions changed to President and seven regional representatives.  Paul Landis retires as Executive Secretary.  Ken Marks, Upper St. Clair advisor named new Executive Director.

1974 - PASC incorporated as a non-profit corporation in Pennsylvania

1977 - Jim Finnemeyer, North Penn HS advisor, becomes third Executive Director.

1982 - PASC celebrates 50th anniversary at Somerset HS

1984 - Advanced High School workshop begins at Scotland School in south central Pennsylvania

1985 - Bethel Park HS hosts NASC national conference

1986 - Altoona HS hosts 50th PASC state conference.  Anniversary gavel presented with school color ribbons of all past host schools.  Conferences grow to 800-1400 delegates

1989,1997 - PASC hosts NAWD a national conference for adults working with leadership workshops and leadership classes Philadelphia (1989) and Pittsburgh (1997)

1990-1993 - Creation of Executive Board standing committees with adult District Directors and student Regional Reps as co-chairs.  Assistant Executive Director position formalized.  Creation of Middle Level Coordinator, Publications Coordinator, NASC Trip Coordinator. Summer workshop program expands to four gold high school programs, two blue middle level programs, as well as the Advanced Gold program.

1997 - State charity program formalized.  Projects developed by state conference hosts.  Over the next decade projects have raised nearly $500,000 and involved  student in thousands of service hours.

1998 - PASC adds two Middle Level representatives

2002 - pasc.net goes online

2004 - PASC champions “Freedom's Answer” voter registration and voter turnout election drive

2006 - North Penn HS hosts fifth NASC national conference held in Pennsylvania

2007 - Executive Board creates new Administrative Coordinator positions within the board to promote membership, resource development, and to create a liaison to a new PASC Alumni Association.

2008 - PASC selects first student to serve on the Pennsylvania State Board of Education. PASC now annually selects the student representatives on the State Board of Education. 

2011 - Altoona High School hosts 75th state conference

2014 - Rose Ann Fulena, Union HS/MS advisor, becomes fourth Executive Director

2016 - PASC adopts new vision statement, mission statement, statement of values and tagline. New committee structure implemented and administrative coordinators introduced.

2017 - PASC ratifies new constitution and bylaws that eliminate districts and restructure regional map. More student representative positions are added. Student representatives on State Board of Education become voting members of the PASC Executive Board. State President position is opened to any high school student in PASC.

2018 - PASC selects Four Diamonds as the official PASC State Charity Partner. Since 2018 PASC member schools have raised over $5 million dollars for Four Diamonds. PASC also launches partnership with the Pennsylvania Principals Association.

2019 - South Fayette High School hosts the sixth NASC national student council conference held in Pennsylvania. PASC members approve a constitutional amendment opening membership in PASC to schools that sponsor a leadership organization including class council, honor society chapter, interclub council, or similar organization.

2023 - The PASC Executive Board votes to partner with NASSP as the state affiliate for National Honor Society and National Junior Honor Society in Pennsylvania.