This is in stark contrast to assignments in many academic disciplines in school, where students are given sets of problems to solve, chapters to read, or essays to write, and the time devoted to homework is determined by the time required to complete the problems, read the chapters, or compose the essays. It seems readily accepted in other disciplines by teachers and students alike that all students will not devote the same amount of time to assignments, because individual learners work at different rates and different learners will not require the same amount of time to complete each assignment. How long one works depends on how long it takes to accomplish the assigned goals.