School of Seleucia-Ctesiphon
The School of Seleucia-Ctesiphon (sometimes School of Seleucia) was a theological school of the Church of the East located in the western half of the city of Seleucia-Ctesiphon on the right bank of the Tigris. It was an independent Christian school, not attached to any particular church or monastery.
Source: Wikipedia — School of Seleucia-Ctesiphon (CC BY-SA 4.0)