Age group(s) for which this technique is helpful:
Elementary School

Primarily used to improve behavior:
Both At Home and At School

Instructions for using this technique:
Have a blackboard hung where all can have access.

List three behaviors that are causing problems.

3 points per day will add up to 21 per week. Anything under that will be rewarded with something the child chooses within reason. Choices should be discussed at the beginning of every week (movies, extra TV, friend sleep over). This will help the child achieve their goal.

Now, the child receives one warning for the behavior listed on the board. After that, the parent does not talk or yell or argue, they simply get up and put a check next to the behavior.

Do not engage in any discussion.
Parents can also remove checks when the child has caught themself in the problem behavior and has stopped and choosen the proper behavior. Positive reinforcement is the key.

Other information parents should consider before using this technique:
The same technique can be used with their teacher, and weekly communication should be established.