This is the Hamilton Branch of a Chandler Library, and literally right inside Hamilton High School. I approached with my head down, because I'm scared of high schoolers, but luckily I didn't have to go into the high school to get to the library.
I'm not sure what it's like during the day, but after school is out it's full of students and some random parents with their young children. It's a smaller than normal branch, but they have a decent selection of books and dvds.
It's definitely worth it to drive a couple miles north to the big location in downtown Chandler!