Symptoms of eating disorders (ED) have increased among males recently. The SCOFF questionnaire for screening ED counts on a formal validation in Colombian only on girl students. However, psychometric properties of this questionnaire in males are unknown. The purpose of this study was to determine the internal consistency and factors of the SCOFF questionnaire and make a gender comparison among adolescent students from Bucaramanga, Colombia. A probabilistic sample of 2496 male and 2375 female, aged 10-19 year-old, completed the SCOFF questionnaire and the CAGE questionnaire that identifies abusive alcohol consumption (divergent validation). The internal consistency of the SCOFF was established with the Kuder-Richardson’s formula 20, and the divergence with the CAGE questionnaire with the Pearson’s correlation. Results showed among male an internal consistency 0.521, and among female a consistency of 0.584. One factor explained 34.7% of the variance in males, and one