What kind of solution would a startup come up with for a kid who doesn't sleep under the same roof three nights running or who doesn't have a single role model who succeeded at school and is doing well professionally because they live in an area which has been systematically screwed over (race, class, etc.) for so long that everyone they know has given up?
There are a few areas where the tech-world style approach could help — building better software for class management, lesson planning, etc. if for no reason other than reducing the amount going to huge, under-delivering enterprise software vendors – but most of the problems are areas where we've chosen not to invest as a society: jobs, housing, medical care — critically long-term disability care — etc. Ask a teacher how it feels when a bright student starts missing school because their family was evicted or is being pressured not to go to college because their family wants them to watch a younger/disabled sibling while the parents are at work.
The best use for that $100M probably would have been opening some sort of high-headcount employer in the area to help break the cycle — even a call center job is a big step up if it provides a consistent, livable income.