Talk about your experiences as parent of a high schooler in Concord. What's good and what's not so good?

My daughter is going to a high school in Concord and she really doesn't like it at all, it seems not challenging for her, she hardly spends time in homeworks like she used to do in the school she was going before, if she doesn't get challenged in school, she spends almost all day playing games in the computer, I always asked her if she is done with her homework and she says yes, she is a A student, I don't have any problems with her regarding her grades but I am planning to transfer her to another high school that is more challenging for her, hopefully they don't turned me down, I can't afford a private school at this moment, but if I can afford it, I would put her in one. Regarding the dress code from the high schools, I would prefer kids to have uniforms instead, even in public schools, kids wouldn't be able to wear like gang looking clothes, chains and all that stuff.