Having said that, MakeSchool isn't trying to be a replacement for a traditional uni education -- hence the "gap year" terminology -- but for the price, I'd hope they're working with ABET to get some kind of seal of approval of their curriculum. Alternatively, they can do what some colleagues of mine did back in the late '90s, with a similar concept (a "web talent incubator" named Populi) -- they worked with accredited institutions like Pratt to build and monitor their curricula, giving them the imprimatur of a prestigious institution without the regulatory handcuffs.
An online-only school can be accredited at least since the '90s, though, in cases where it does seek to provide education equivalent to a traditional physical-classrooms university, and wants equal recognition. I believe the first online-only university in the U.S. to receive accreditation was Western Governors University (founded 1997): https://en.wikipedia.org/wiki/Western_Governors_University. They charge about $5500/yr, fwiw.