A lot of my family and friends homeschool in this manner. The sad fact of reality these days that both parents have to work. So they find like minded people and kind of rotate their own schedules. One of the biggest benefits is, say, a local dad is a geologist. He will take the kids out for a hike and explain everything they see. So they are getting literal expert knowledge and it's obviously unscripted. This is just a dude with a passion about what he does and wants the best for the kids, modern day "teaching" be damned.