Another school I visited was the one shown in Hanasaku Iroha.
Image from Episode 4 - 04m53s
In front of the school. This is Kanazawa College of Art in real life.
Image from Episode 26 - 14m34s
Closeup of the main entrance.
Image from Episode 4 - 09m58s
This is on the left side of the building.
Image from Episode 18 - 08m39s
Ohana and friends are having lunch on this side of the building in a later episode.
Image from Episode 18 - 08m52s
The stairway to the right of Ohana in this shot is on the right side of the building and has been flipped around in the anime.
Image from Episode 18 - 09m42s
Slightly closer look at the left side of the building again.
Image from Episode 18 - 09m47s
And finally, there's another set of stairs on the right side of the building that's shown behind Ohana here.
This location was visited on 2016/10/11.
If you decide to visit this place yourself, do remember that it is a school still in use and you should NOT enter it.
School official website
Special thanks to the ones who went here before: