Academy for Distance Learning (Canterbury): The Academy for Distance Learning (ADL) is based in the historic university city of Canterbury (England) and welcomes students from around the world. It is affiliated with ACS Distance Education which was established in 1979, and licenses ADL to offer and award ACS courses, certificates and diplomas.Our educational Philosophy is based on the commitment: Students are our priority.The Hallmark of any good distance learning institution is the level of support supplied to students as they journey through their studies.