My daughter is in college now, but we used a variety of private, part-time, and homeschooling approaches prior to that. One thing is that there are a lot of resources (e.g. independent teachers for subjects you don't know, co-ops for socializing, etc.), and the more people are doing it, the more true that becomes. My parents were both public school teachers, and yet we found ourselves home- and alternative-schooling our daughter. Public schools don't really seem to have a strategy for dealing with the situation, other than complaining about it.
If you are offering a free service, that is quite time-intensive, and increasing numbers of people choose to not use it, then there should be more introspection going on. If it's happening in public education, I'm not able to see evidence of it.
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