Each textbook can have modules and problem generators, designed to make it easy for teachers to assemble a custom curriculum for their class, to assign problems, and to quickly have generic quizzes graded.

Having worked for three separate companies trying to do just that, it’s not that the technology doesn’t exist. It’s that it’s too expensive for individuals to purchase and school districts had a hard time getting contracts approved due to NCLB and constant budget cuts. Strange though that a company like Google could ink a huge deal with an entire state even though none of the shit did anything it promised.