>The challenge is what to do about the large number of students - at many schools the majority - who don't.

The solution isn't just to keep throwing money at the problem, because empirically that's been completely ineffective. If a large segment of the population are effectively learning nothing in e.g. the last 4 years of high school, they shouldn't be forced to attend, wasting resources that could be spent educating people who actually want to be educated. Instead there should be stronger support for people who come back to complete a high school diploma at a later age, as many of those students will come back with real motivation for study once they find their career opportunities without it are limited.