Adolescence, a critical phase of rapid physical, social, and psychological growth, encompasses individuals aged 10 to 19 years, Evaluating nutritional status for decades has involved standard methods like dietary, anthropometric, biochemical tests, and clinical signs, often incorporating socioeconomic status (SES) as a key determinant. The study aimed to assess the nutritional status of students (10-12 years old) attending three types of basic schools whose families’ SES was categorized according to school fees paid as high, medium and low. Methodology: This cross-sectional community-based study investigated the influence of family socioeconomic status (SES) on the nutritional status, school performance, and self-esteem of children aged 10-12 years attending basic schools 2014. 210 participants were chosen. Data were collected through anthropometric measurements and a questionnaire covering demography, dietary patterns, self-esteem assessments, and school performance obtained from schools. Statistical package for social sciences version 26 used for analysis. Result: Data from 210 students (45.2% boys, 54.8% girls) The findings revealed a significant impact of family SES (P=000) on nutritional status, energy and protein intake, school performance, and self-esteem. Low SES families had a higher prevalence of underweight children (66.7%), while high SES families had more overweight and obese children. Those from high SES consumed more animal foods, fast foods, fresh fruits, and vegetables compared to medium and low SES groups. High school grades were predominantly achieved by high and medium SES students, with low SES students obtaining lower grades. Normal-weight students exhibited better school performance and self-esteem than overweight, obese, and underweight students. In conclusion, family SES significantly influenced the nutritional status, school performance, and self-esteem of children attending basic schools. Recommendations, to ensure students' well-being, ..