Classes 7 and 8 at The City High School, Bolarum. What is the day like?

My niece is finishing class 6, and we're starting to look at a few options for class 8, which is a year away. The north side is one of the areas we're considering. For parents with children there in the middle classes: homework, how often there are tests, and whether there's any time left for anything else. She reads constantly and plays throwball, so a school that leaves some room for both would matter more to her than anything else. Any experience welcome ❤