Facing budgetary constraints, some school districts are combining classes with low class size and transferring teachers to school buildings/classrooms with high class size. Research findings on the effects of multi-grade (a.k.a., combined/split/multi-age) classrooms on student achievement are mixed. In your opinion, what are the potential advantages and disadvantages of combined classrooms, especially for English language learners (ELLs) and economically disadvantaged students?