They receive free computers. Classes are taught by school districts especially for home schoolers. Home schoolers are able to participate in regular school classes.
Schools provide free curriculum and assistance to home schoolers.
The government school system has been losing valuable students to home education. These students could bring in state and federal dollars for the budget and for jobs. They aren't taking advantage of the system's services, including the latest programs for social engineering. So the education system is trying to win these customers back. They are free for the taking.