This could grow even bigger, I'm sure

Imagine home schooling networks hiring tutors to instruct larger blocs of children on subjects outside of parents' expertise. With some polishing, this could allow students or their parents to build very customized courses of study that would likely be unavailable within the majority of public schools - a further dent in the mass production model of education.

Low prices, as the article mentions, certainly bring more tutoring expertise down to a lower income class. That's a point that is hard to argue.

As usual, those who would be most harmed by a system that expanded choice down more deeply into the middle class price range would be the lowest classes - those who are often at the mercy of underfunded public schools, low-quality teachers (and their union that would resist supporting a tutor system that undercuts their own role - even if they often fill it poorly), and parents either too uneducated themselves or too busy to make smart decisions in preparing their children for the future.

I would imagine these low cost tutoring programs would benefit low income students the most if aggressively utilized by public schools...a very unlikely occurrence if the teachers' union has its way.