Our study has shown that school is the most difficult test in the life of the ADHD child. There is a structure, rules, routine, a need to maintain attention on tasks that are often interesting to him and on top of that the problem of homework. An undiagnosed hyperactive child lives and makes live a real nightmare. The best teacher will break down because a single hyperactive child (not followed up) manages to disrupt his whole class. He will be rejected by his classmates, disliked, and often seen as mean. And yet the teacher will not question his intelligence. The child with attention deficit will often be treated as lazy, and told that he could do better if he made an effort. These are children who are less noticeable, they are quiet and they are found at the back of the class. According to our study we also noticed that teachers are not aware of this disorder, teachers should know the problem as a whole, and work with the parents to help the child to progress, sometimes it would not take much for the child to stay in school.