The problem isn’t the technology, but the implementation. The USA should have had a national digital textbook initiative, where free textbooks are developed and digitally distributed to all schools of every educational level. 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. The biggest problem with such a program would be things like essays, culture, and history, since many bad actors would want to press their beliefs onto students. Still, things like dates, locations, and people involved with events can be standardized. Maybe teachers can rate educational modules, to help keep bad material from being adopted by most teachers?