That is exactly how I feel. The school around the corner from us is overrun with illegals. My daughter starts kindergarten in 2 years and you can be assured she will be going to the private school at our church. It does really burn me up, though, that I am paying for illegal immigrants' education, and then paying another $4k/year for my daughter's education as well. Something has to be done!!
Look at the bright side. You found out in advance so you can put your child in a competent school instead of falling behind in a public school trashed by babysitting illegals. Another of my co-workers from a prior employer took one of her sons out of publich school and tried the private route. He was doing so much better after 6 months that she pulled the rest of her kids out of public school and enrolled them in the private school. It is a major financial hardship, but she has nothing but glowing praise for the vastly improved levels of instruction and achievement.
My youngest son fell behind in the San Diego school system. It appeared he was doing fine based on grades and "self esteem". We moved to Idaho and it was clear that he was way behind grade level. The Idaho teachers weren't willing to make any effort to help him catch up. I now have an 18 year old dropout. It was frustrating to watch him bring home report cards with A's and F's.