Directions: Answer the given question based on the following passage:
The challenges involved in teaching large classes can be daunting. The ideas presented for dealing with these challenges have been developed over a period of several years and are the result of research of the literature on teaching large classes and from long interactive sessions with teachers. These teachers brainstormed and conducted action research while trying out these ideas (and many others, not always with the same degree of success) in their classrooms. The idea of trying to manage a classroom full of noisy, often hungry, teenagers who may or may not be interested in learning English is daunting at best.
What is the underlying idea of the passage?
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