From “Fundamentals of Coaching Basketball,” by Coach Glenn Wilkes.
Why is it really necessary to plan and organize practice sessions? A coach — particularly an experienced one — should be able to take the floor and, using his or her judgment, work on the phases of the game particularly needed by the team. Unfortunately this is not always possible. Disorganization can result and interior learning situations can occur when a coach has not organized a complete practice session.
It assures maximum use of the time available.
It ensures coverage of all phases of the game. Without thorough planning, you might inadvertently neglect some important phase of the game, which would result in costly mistakes on game nights.
It eliminates over-emphasis on any one phase of the game. The natural tendency to overemphasize the offensive side can be curbed and equal time devoted to defense and the other components of the game.
It maintains better player interest. Shorter drills are more effective than lengthy ones. Unless practice time is preplanned, drills may become somewhat long and boring to players, and learning may be reduced.
It allows for evaluation oat the end of the season and aids in planning future seasons. A composite total of time devoted to each phase of the game can be invaluable in determining the reason for individual and team weaknesses. You can make adjustments in practice plans for future seasons to correct these weaknesses.
It enables planning drills for maximum results for each participating player. Without proper planning, a drill might have two players playing one-on-one and 8 or 9 players waiting in line for their turn. A well-organized practice has all players working simultaneously.
It enables maximum use of assistant coaches.