Lesson plans represent teachers’ thinking and preparation entering into a class. They can take many different forms, from a detailed script for the teacher to follow almost word for word or just a basic outline for the direction of a class. The form and format of plans varies as widely as there are schools, yet almost all institutions emphasize a behaviorist perspective that asks teachers to develop observable learning objectives, procedures to lead students through activities to achieve those objectives, and assessments based on observation that confirm learning has occurred. Other information on a lesson plan might include identified standards of learning drawn from local, state, or national resources and materials necessary to successfully conduct the lesson. Although interactions in class can demand changes to lessons, good planning allows for this as teachers set students up for learning opportunities.