Theological School in Heybeliada was founded in the Monastery of "Aya Triada" in 1844, as a four year secondary and three year specialized (theology) school.
The school underwent the following stages between 1844 and 1971.
1844-1919 Four-year secondary and three-year theology education
1919-1923 Five-year theology without secondary education
1923-1951 Four-year secondary and three-year theology education
1951-1971 Three -year high school (lycee) and four-year theology education
As of 1951, foreign students were also permitted to enroll in the School. 930 students graduated from the School between 1844 and 1971 and 343 of these graduates have become bishop.
In line with the abolishment of religious education in private higher education institutions, the Theology Department of Heybeliada Clergy School had to cease its functions in 1971. This was not a deliberate action specifically directed at this school but a consequence of introduction of a general legislation in Turkey.
However, the lycee section continued to function as “Heybeliada Private High School”. But, the Greek Orthodox Patriarchate in Phanar applied to the Ministry of National Education and Sports in 1984, proposing to close down the Lycee section due to insufficient number of students. Thus, Lycee section also ceased its functions without being subject to a decision of closure.
Under the current relevant provisions of the Turkish Constitution and the Law on Private Education, religious instruction at higher, intermediary and elementary levels is possible only under the supervision of the State.
Turkey understands the need of the Greek Orthodox Community to train its clergy and has shown its willingness to seek ways to handle the issue within the legal framework.