This document discusses teaching mixed ability classes. It notes that mixed ability classes can present problems for teachers as students have differing levels. Some challenges include providing learning for all students, managing pacing, and designing assessments. However, there are also advantages such as developing tolerance and cooperation. The document recommends strategies for teaching mixed ability classes like differentiated instruction, grouping students by ability, and allowing peer learning. The conclusion states that mixed ability classes challenge teachers to understand diverse student needs, but various grouping strategies and open discussion can help address difficulties.