No assertion: The School of Rock is about a substitute teacher. Mild assertion: The School of Rock is an entertaining film about an influential substitute teacher. Strong assertion: The School of Rock is about how a substitute teacher uses the transformative power of rock and roll to help his students and himself. 2. A good thesis statement strikes the right balance between too broad and too narrow. It needs to be focused
enough to encompass just enough material to cover within the spatial confines of the essay, and narrow
enough to include enough material that can be supported by evidence.
Too broad: Animals have developed many strategies for survival. Some focus: Animals have developed many strategies to protect themselves. Focused: Many animals have developed physical properties that serve to protect them from
