Missionary Maria West is appointed by the American Board of Commissioners of the Congregational Church to open an educational institution in Smyrna, Asia Minor

Re-established as the American College for Girls at the invitation of Prime Minister Eleftherios Venizelos at Paleo Faliro (Athens, Greece) following the Asia Minor catastrophe

The school moves to the Helleniko campus

School buildings serve as military hospitals

The School of Social Welfare, the first of its kind in Greece, is created to help meet the urgent needs of UNRRA (UN Relief and Rehabilitation Administration) for trained personnel and to provide a social welfare specialization for College students

Hill House, the Boarding Department at Pierce College, is reorganized after WWII and expanded to accommodate and house 100 students

Renowned painter and engraver, Moschos George, joins Pierce College as the professor of drawing and organizes annual painting exhibitions in the Pierce Hall, with some of the most famous Greek artists: Kanellis, Mitarakis, Gounaropoulos, Vourloumis, Katraki

Gymnasium and College divisions are incorporated in the State of Colorado, US, under an independent Board of Trustees

The school is recognized by the Greek state as equivalent to the Greek public schools

First studies commence on the new campus at Aghia Paraskevi

First bachelor's degrees awarded: Bachelor of Arts and Bachelor of Science in Business Administration

Pierce and Deree College officially become divisions of The American College of Greece

Deree College is accredited by NEASC (currently known as the New England Commission of Higher Education – NECHE), a globally recognized standard of excellence US accrediting agency. Deree is the 1st international American college or university to receive this accreditation.

Pierce College becomes co-educational

The College is honored by the Academy of Athens for its contribution to education

Inauguration of Kimon Friar Visiting Lectureship in Modern Greek Arts and Letters at Deree

Inauguration of the Downtown Campus

Deree Graduate School established

The main campus serves as the high-performance training center of the US Olympic Committee during the 2004 Athens Olympics

Deree enters a degree validation agreement with the Open University of the United Kingdom; Established the Frances Rich School of Fine and Performing Arts

Alba Graduate Business School and ACG officially announce a strategic alliance. Alba relocates to ACG downtown Athens campus

Institute of Public Health established, funded by Behrakis Foundation

Pierce IB Diploma Program (IBDP) established to provide an international education that goes beyond national, cultural and geographical boundaries

Launched ACG 150, a strategic plan to leverage education for economic, cultural and social impact

Opening of the ACG Simulated Trading Room with the support of USAID (United States Agency for International Development); “Education Unites: From Camp to Campus,” an academic scholarship program to empower young refugees in Greece and offer displaced students the opportunity to continue their studies at Deree

Deree Library renovation project completed with support from USAID 

Opening of Deree Stem Labs and renovated Pierce Physics Labs, supported by USAID

Pierce Pre-K, Kindergarten and Elementary School launched at the new East Campus at Spata