The authors posit that the reason why traditional schooling fails so many is that by nature, the structure of schools encourage standardization rather than customization (and customization is what produces truly effective learning environments). Using available data, they predict that in the next 10-12 years fully half of all high schoolers will attend classes online in order to maximize the marketplace's ability to offer them opportunities not available in the traditional face-to-face format. They predict that this move will accelerate in response to tightening budgets and teacher scarcity - most likely, core courses in math and reading will continue to be taught locally in person... but most "elective" type courses will be begin to be taken online.