For those that were doing remote learning, parents found out for the first time what the teachers were pushing in the classroom and do not approve of it. Issues like Critical Race Theory, Gender Theory, and so on. Those who turned to homeschool do not plan on returning the kids to public schools.
The biggest increase in homeschooling was with minorities. Homeschooling continues to prove itself to provide a superior education, kids learn more, learn faster, and tend to do better in life. Homeschoolers also tend to teach manners and religion. All of which is a threat to the authoritarians in the Democrat party.