As schools attempt to accommodate an increasing range of students with disabilities, linguistic differences, or other unique requirements, teachers worry about their preparation to deal with these differences. General education teachers do not always have the necessary background. Special education teachers may have only limited knowledge about the general curriculum and general education teaching practices. Two options are possible to solve this dilemma: (1) "hybrid" teachers with the capacity to work with general and special education students because of their training in both fields; and (2) to make groups of teachers collectively responsible for groups of diverse learners. A key feature of mixed-ability grouping practice is that teachers share working with all children and youth as part of a team. (SLD)