I’m thinking about Malcom Gladwell’s analogy that I read in the EdSurge newsletter (subscription only).
It goes like this: basketball is a “strong link” sport, where success hinges on the best players, who then receive the most support. By contrast, soccer is a “weak link” sport, where the team only does as well as the weakest player.
In education we need to think soccer, not basketball. Every single student matters. When all students do well, our society does well.