My grandson is a full-time Florida high school student. He attends classes from home via Connections Academy. They currently have cost-free programs in 24 states. His is FLVS (Florida Virtual School). I can't say enough about the program! He does go to the local brick and mortar school for the state mandated FCAT tests but otheriwse he attends classes from the kitchen and the car. There are 'live lessons' which are recorded for later viewing by kids who can't attend them and his teachers are only an email or phone call away if he has a question. He can take classes which interest him but are not offered in the local school. Best of all, he has a 93% average.
I’m a big fan of Connections Academy. They do a good job and provide, for many courses genuine expertise well beyond the level that typical parents can reach.