In December of 2018, St. Johnsbury Academy Jeju began the process of obtaining accreditation as a member of the New England Association of Schools and Colleges.

SJA Jeju is an associate member of the East Asia Regional Council of Schools (EARCOS) and a member of the College Board.

For the recruitment of U.S. and international faculty, SJA Jeju has joined International Schools Services (ISS) and Carney Sandoe & Associates (CS&A). Membership with Search Associates is pending.

For its testing services SJA Jeju has joined World-class Instructional Design and Assessment (WIDA) and the Educational Records Bureau (ERB).