Magnet schools benefit the individual student but they are a bit problematic for many schools because they pick off the highest performers and whoever is willin

Magnet schools benefit the individual student but they are a bit problematic for many schools because they pick off the highest performers and whoever is willing to do the work to get admitted / physically drive to the magnet. And then the home school quality goes down and that hurts everyone else who isn't among the small group at the magnet.