All rights reserved The Headington Institute is a 501(c)(3) nonprofit public charity organization. All contributions are tax deductible. Donate online or contact us for more information. Headington Institute Approved by APA: The Headington Institute is approved by the American Psychological Association (APA) to sponsor continuing education for psychologists and the Board of Behavioral Sciences of California (#PCE2823) to offer continuing education for marriage and family therapists and social workers. The Headington Institute maintains responsibility for this program and its content.