Students’ aggressive behavior generates significant difficulties in the educational environment. It is essential to pay close attention to these issues as their effects often extend beyond short-term disturbances. The school tried to react at the students’ aggressiveness problems by implementing intervention programs, counseling programs. These interventions can reduce aggressive behaviors by boosting the social skills, by improving emotional adjustment and by solving problems encountered in a social context. Such intervention programs already exist in schools, which is important to mention. Despite that, more and more students are in need of personal development and unfortunately, there is only one available specialist in charge of these programs. Developing a high self-esteem can help the student to overcome his/hers aggressiveness through experimenting emotions like acceptance and understanding. Therefore, it is mandatory to use counseling programs in order to reduce and overcome these behaviors. As many researches pointed, there seems to be a direct link between low self-esteem and aggressive behavior, which needs to be more investigated. Within a focus group, there were observed several discontents from the students’ side such as: not being listened to, not being encouraged, not being appreciated or not being valued. All the students questioned said that if they were being listened to, encouraged, appreciated or valued, they would be more balanced. The current research analyzes the relationship between self-esteem and aggressive behavior of preadolescent students, the main objective being to highlight the need to develop and implement some methods that are required for a growing self-esteem.