This is Sweden's first original TV series on Netflix.
The school and the building is real but the name is Viktor Rydbergs Samskola "VRS" 7th-9th grade and Viktor Rydbergs Gymnasium "VRG" 10th-12th grade. It's a non-profit private school run by a foundation in the center of Djursholm on top of a hill. Sebastian's house is the same house they filmed the movie Winter Bay (1996) in. The house is located in Djursholm.