Three is a small start, but it’s a start. I agree with you. Deport all illegals (including 5-plus million illegals in our schools). No exceptions. Imagine the resources that will free up for teaching American children, among other good things.
While mass deportations will help economics, the main thing required to help improve the children's education would be to mass deport or fire all the current teachers/propagandists...
Without getting rid of every one of those communist ideologues teaching in the government schools, a "better" education is only a fantasy...