Every trouble in a child's life is the result of something. Sometimes, simple unawareness in the childish psychology could cause many uncured psychological complexes and troubles. Every children psychologist suggests that it is better to prevent than to cure.
How to make a child be organized

Many school troubles like inability to be a good pupil or lack of time are the result of bad self-organization skills. An organized child has an opportunity to do the things quicker without making panic when he/she is not able to do something in time. So, you as a parent have to give your child the first tips how to be organized. Let your child know that you are keeping a list-to-do. It is a good pattern to start the same in order to get all the affairs planed. As a matter of fact, planning is one of the most important factors to be organized.
So, it needs some effort. Speak to your child and give the pieces of advices loyally. If he/she is to do some project, it is better to make it beforehand and escape worrying and panic when the time of showing it is close, but the project is not ready.
Self-organization begins with the trifles. For example, the coat which is thrown on the floor instead of being hung at the wardrobe. Teach a child to keep the needed things on the right place. Actually, the kids try to listen to their parents' tip for a short time. The teenagers are more difficult to cope with and explain how it is better to do. That is why, if you are not going to start this work right now, later you are risky to face the troubles with your own child, his/her stubbornness and maximalism that makes him/her feel that he/she knows life better than you do. So, the earlier you start this work with your child, the less time you will waste in some years to fight your teenager.