If the parents all say the same thing, then you will have social proof, but it will be wrong. You must, regardless of the hurdles, find a way to survey childre

If the parents all say the same thing, then you will have social proof, but it will be wrong. You must, regardless of the hurdles, find a way to survey children or graduated children. When parents find out that their child was not socialized, despite their strong belief to the contrary, they will be left with children who no longer wish to be around them. You can easily design a study to steer people to homeschooling, by only asking the parents. They have too much invested in being alternative education experts and it's hard to admit that you played around and messed up with how you schooled your children. If homeschooling turn out ok, the upside is that a child will have a maybe slightly better educational experience. If homeschooling turns out to not be ok, the downside is that you will permanently damage parent-child relationships. You're playing with fire by even attempting this study, the way you have it set up right now.