Disclaimer: This was my experience as a social worker about twenty years ago.
I had a small number of homeschool students in my caseload, and I was supposed to drop in on them unannounced. I did have one student who was doing homeschooling effectively. The district had a homeschooling centre, and students could drop in to access resources and tutoring. Frankly, it worked great for that kid. I would check in on her at the centre and verify her attendance and academic performance.
The other two demonstrated an unintended, but predictable, flaw in the welfare laws. One of the girls (and yes, all three were girls) would predictably be babysitting an infant sibling, smoking on the couch, playing video games with friends who were cutting school. The third, instead of babysitting and video games, she just watched TV and smoked pot all day.
The flaw was that welfare reform linked the welfare benefit to the child's school attendance. This created a situation where the child was "earning" the family income. These children understood that and leveraged it into power at home. They didn't want to go to school, so they were enrolled in "homeschool." For the parent, it was that or lose welfare benefits that were relied on. The highly motivated child used homeschooling to her benifit. The other two were very ill served by it.