‘Hogwarts School?’

Actually no! It’s the main building of Fettes College, a co-educational independent boarding and day school in Edinburgh.

“The main building, by David Bryce (built 1863-69), blends the design of a Loire château with elements of the 19th-century Scottish Baronial. According to the school's website, the combination of styles and the site of the building led a modern architectural expert to praise it as "undeniably one of Scotland's greatest buildings".
https://en.wikipedia.org/wiki/Fettes_College