I’ll give him the benefit of the doubt and hope for the best.

My wife has been a high school math teacher for 25 years and has seen waves of tech luminaries give their visions of how tech will radically improve education and learning. She can’t point to any startup that has had a major impact in improving outcomes. I wish I could point her to something that really will have an impact in, or even out, of the classroom for her students.

That's not unique to tech startups. Almost nothing in terms of explicit methodology has any effect on education outcomes. The literature on education research is of abysmal quality too.