Not sure what school in Brea you're talking about, I have experience with one and it is a great school. Have you talked to any of the parents of children in this school to see what their experiences have been?
As K E. suggested, check the school out yourself before making a decision based on "ratings" and if you don't care for it ask for an "inter-district" transfer, which may be granted. Make sure you have a good reason, i.e., your babysitter lives within walking distance of it, etc.
While it doesn't affect test scores, my grandson goes to a middle school in a city neighboring Brea. He had a long-term assignment to work on a few months ago and was resentful that he had to do his when all his friends have their parents do theirs. I questioned that this was true and he and his sister were adamant about it, and they also told me that other parents "sign off' on the community service, without their kids actually doing any, yet my grandkids did theirs. I reassured him that he would benefit by doing his own work, his friends wouldn't, and that their parents are depriving them of the learning experiences they should be getting. And this is in an "All-American" school with great ratings :(