The present research was conducted to investigate the impact of English medium instructions on the dropout rate of students in high schools of Lahore. A total number of 30 Head teachers were selected as sample of study. It was studied that either change in the medium of instruction affects academic achievement of students or not. Survey method was used as a procedure for data collection. A self- developed structured five point likert scale questionnaire was used in order to get responses of the head teachers regarding change in the medium of instruction on dropout rates. Content analysis was carried out to analyze the responses. Frequencies showed that the change in the medium of instruction has an impact on students‘ dropout rate. Many previous studies are consisted with the findings of present research. These findings have implications for educational institutions, so that timely counseling could be provided to the students for effective coping with these problems.