If an alien space ship were to hover over the U.S.A. and suck up every government school there would be chaos for about 2 weeks. That's all.
There is **one** exception! Mormons would have schools organized within 2 hours staffed with highly educated and qualified volunteer teachers and ready to open the next day.
Short-term chaos is not an issue. Do it over the summer “vacation”. Shut down all skools in May. By September, all chillrun will have to be either educated by their parents or enter the workforce. Then, only those who WANT to be educated will get education. The best of all is that there would be a surplus of cheap labor. No more need for illegal immigration.