I'm sorry, I genuinely don't understand the question of, is it right to give a worse education. Are you saying that homeschool is worse? Sorry not trying to deter from the topic, but I might just not be reading it right.
I will say this in response though, I don't agree that everyone should be given a completely equal opportunity. What I do think is that everyone should be given a very superior baseline of opportunity.
Chasing completely equal opportunity seen like a fools errand. But we really should be putting education and health first, unfortunately we just don't.