There is another option that would be progressive "inclusive" approach: allowing more flexibility in teaching content and materials so that teachers can provide

There is another option that would be progressive "inclusive" approach: allowing more flexibility in teaching content and materials so that teachers can provide different exercises, challenges, etc to different students in the same class. This is a matter of having a trust-based (rather than Control-Bäder) system with highly qualified teachers and high autonomy for those teachers. The evidence indicates that all - gifted, special needs and any other students and teachers which enjoy increased autonomy. This is the approach in eg Portugal, Finland, Estonia, Norway, ...