Traditional classes or grade levels are divided into sections. Subject teachers are allocated to each section. Each section operates in isolation to the other. What if all sections took the expository parts (lectures and demos) together, then broke up into smaller groups based on level and progress? This would enable far greater learning possibilities.
What if the lecture was taken as part of homework in a flipped classroom manner? What if all the subject teachers of the class/grade spent individualized time with specific groups, giving issues personal attention?