I'm concerned that they won't be prepared for the real world. They do have required assignments and chores, so they are used to working, but they still have tons of free time & set their own agenda to a large extent, and I worry it will be a shock when they get into a real 8+ hr a day job or rigorous college schedule. School, at least, would get them up and out the door by 8 and they wouldn't have any choice but to stay put for the duration of the day. But they have been in school and were so depressed there, the other kids were really rotten towards them and they were so stressed and unhappy.
I also worry that being around a worn out SAHM (me!) all day is not the best example for them... at least at school they were surrounded by professional women, the teachers for the most part were amazing people, really committed and motivated. I thought they were great role models for my girls. I enjoy being a SAHM but worry a lot for my daughters.