Aims: In this study it is aimed to evaluate the knowledge level of Trakya University Medical School Students about sexually transmitted diseases (STDs) and to see the effect of committee education system.Methods: A cross sectional survey was applied to Trakya University Medical School 1st, 2nd, 3rd and 4th grade students. Four-hundred and seven students responded a survey which contained 15 questions. Knowledge level of the students on STDs was described by number (percentage) and chi-square test which are descriptive statistics.Results: : 3rd and 4th grade medical students’ knowledge level was found significantly higher than the 1st and 2nd grade medical students’ (p=0,0001). It was found out that gender doesn’t have any effect on the knowledge level (for 1st and 2nd grades p=0,285, for 3rd and 4th grades p=0,134). Conclusion: It was seen that the lessons that are given in Trakya University Medical School with committee system partially increased the knowledge level on STDs