Resources != funding

Resources means teachers qualified, able, and willing to teach in those areas. That probably means paying them more than a similarly qualified teacher in an area that is currently doing better and hence more attractive. But it also means finding head teachers (principals in the US?) who can inspire the whole school, staff, pupils, and parents. Such people are not thick on the ground. And then you have to have stability.

Mere money will not do it, everyone has to work for it.