The Association of Classical and Christian Schools (ACCS) is the only accrediting body in the country that caters exclusively to classical Christian schools like Trinitas. Although the organization has over three hundred member schools, only a small fraction of those schools have met the rigorous standards required to become accredited. Trinitas has been associated with the ACCS since the school's founding over twenty years ago and has been an accredited member for over half that time.
Of course, a school doesn't have to be accredited to be a good school - there are many smaller classical Christian schools that offer an excellent education - but accreditation with the ACCS does assure parents that the school is committed to the highest standards of excellence in its pursuit of classical and Christ-centered education.