I don't currently, but I know many who do. Their schedules OR the ages of their children make it possible.
I go to school full time and homeschool my 9yo... it's super easy. I just take my classes during "afterschool care" hours. My son goes to "afterschool" care (sorry, it always cracks me up), I go to class. I do the vast majority of my work/studying at night when he's asleep. When he was younger, it was even EASIER, because there's daycare and preschool for the younger set, so I could take classes anytime, and not just in the afternoons and evenings.
But for folks I know who work full time:
- The dad (primary teacher) who is a fishing and hunting guide: he's home every morning by 10am (except during deer season, which is their "summer" break). Mom works from noon - 9. They have elementary aged kids. I know SEVERAL others who "trade" teaching or childcare duties because they arrange their work schedules so that someone is always home with the kids.
- SEVERAL families whose parents work from home (writers, artists, and computer people mostly; people who can set their own schedules).
- SEVERAL families of older children (middle and highschool) who work 9-5 type jobs or are single parents. Either the kids are at the point where they are taking lessons from outsiders (like the highschool kids at the community college), or they do school in the evening after extracurriculars (drama, sports, mathclub, chess, all the stuff awayschooled middle and highschoolers do after 2pm until dinner) when their parents are home from work. Their kids are, by and large, quite occupied during the daytime. Not even including all the extracurriculars offered after 2pm there are Homeschool groups or classes, part time work (tons and tons of work is available for those 14 and up, especially internships), tutors themselves or being tutored, in training for sports (I know several who iceskate, snowboard, or swim 6-10 hours a day, then come home the same time their parents do, take a break/eat, and bust through their school work), etc.
- A FEW families who can bring their children with them to work (1 archeologist I know, 1 home builder, 1 restaurant owner, a few hotel / B&B workers, 1 forestry family)
With younger children it's quite easy (because of the massive amounts of childcare available). With older children, it's quite easy. It's the elementary kids that it's very very difficult to arrange care for prior to "afterschool" care that is available.