P. - I live in Carol Stream and we moved here when my oldest was 6 months old. He is now 7. This has been a huge topic in our neighborhood, as we also fall into the West Chicago school district for high school. First of all, if you are in Benjamin 27 now, I wouldn't worry for elementary or middle school. They are fine schools.
While I haven't done any research on the high school myself, my neighbors have older children - and they all have. It is a frequent topic at neighborhood get-togethers. Academically, I don't think that WC is doing much worse than Glenbard West. I've heard that there are wonderful teachers and that it is a close-knit school who cares about kids. And, apparently GW isn't any dream, either.
The people that I know that have an initial reaction to it, that reaction is due primarily to a fear of being is such a diverse environment. There are a lot of lower income children in WC, as well. I have 3 neighbors that have chosen to send their kids to WCHS. Another chose Wheaton Academy, and the others ( 3 more) all go to catholic private schools, anyway. So, you can see that it is a split decision.
I honestly just think it comes down to what your expectations of a school are, what your background and beliefs are, and how important a top-notch education is for your child. If you are a person that wants a top ranked school, you are not going to get it in West Chicago. However, if you are someone who feels that your child will be successful in any decent environment, then you will do fine there, I think.
R.