After I checked out the P.A. Works building, I also took some pictures of a nearby school that's seen in True Tears.
Image from Episode 5 - 20m10s
This is Jōhana Junion High School in real life.
Image from Episode 3 - 03m59s
This is where all the main characters except Aiko goes to school in the anime.
Image from Episode 6 - 08m16s
View of the school sports field seating.
This location was visited on 2016/10/12.
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: