I actually attended school in the Tracy district from the fourth grade through high school. I received a pretty good education and had some amazing teachers. I was in Tracy High School's IB program which was particularly good in terms of English and Biology.
I highly encourage you to access the link below and check out the information we have for individual schools. I think you'll find the parent ratings particularly helpful.
Look up the schools scores.Ask them about your concerns.People are moving in and out in droves so they should be helpful right now.