Once you have finished your plans, you will find that your class runs much smoother than it would without it. For example, your students will enjoy the luxury of the daily routine and the security of knowing that their teacher will know exactly what the plan is on a day to day basis. Should a delay occur, such as a classroom discussion tangent or a school cancellation, you will nevertheless have enough time to reschedule various events. Writing plans are also useful in that if you plan to take any field trips, you will be able to prepare for these events ahead of time.
Are you planning on teaching a class? If so, lesson plans provide you with a variety of different advantages. Any experienced teachers will tell you that having a plan does wonders for smoothing out the most chaotic of classes. Others, however, will tell you that sticking too closely to the plan will make things needlessly complicated and that flexibility is the key to running a sound classroom. In truth, both sides have merit; the best way to run a classroom, particularly one filled with younger, excitable students, is to maintain a perfect balance of order and creativity.