“This is a challenging film to mount and their facilities offer us everything we need and so much more for a production of this size,” Paul told Belfast Telegraph. “They’ve also been wonderful to work with and we can’t thank them and Northern Ireland Screen enough for all their support and enthusiasm.”

Reportedly, local locations like St. Peter’s Church, St. Anne’s Cathedral, Castle Archdale, and the Ulster Folk Museum were used to represent parts of the titular school.

Source: https://www.distractify.com/p/the-school-for-good-and-evil-filming-locations