The aim of this study is to find out the most prevalent behavioral problems among secondary school students in Khartoum state, as well as to identify differences in behavioral problems according to the following variables: academic level (excellent, good, medium, and weak), and the grade level (first, second, and third), and the residential environment According to the locality (Khartoum, Jabal Awlia, Khartoum North, East Nile, Omdurman, Karary, Umbada), this is in addition to the problems related to gender (male, female), and school type (geographic, model). To achieve these goals, the researchers used the descriptive approach (case study), and all students that were registered by psychological counselors in secondary schools (1851) cases were selected, and the study tool was represented in the case study form used by psychological counselors. To analyze the data, the researchers applied the statistical package for social sciences by using the percentage of answers for each of the research hypotheses. The study reached a set of results, the most important of which are: behavioral problems are spread at different percentages among high school students in Khartoum State (theft 19.4%, lying 19.3%, aggression 16.8. Behavioral problems differ according to the seven localities of Khartoum State, as the results showed that: theft is one of the most prevalent problems in the Khartoum locality 27.2%, and that lack of attention and hyperactivity are the most prevalent problems in Jabal Awliya locality 49.3%,..............