This research examined English's effect on quality education and its impacts on other subjects and CGPA. For this purpose, a cross-sectional survey was conducted; it was exploratory research. Data was obtained from 180 students of the 10th class of public and Punjab Education Foundation-funded schools from three districts of South Punjab; Urdu medium and English medium students were selected randomly in equal numbers, and the marks of English and other subjects were calculated with the help of mean value. Using SPSS, one sample t-test, independent sample t-test and chi-square test were applied, and the results were extracted. It was concluded that being good in English does not affect the marks of other subjects; instead of English medium, the results of Urdu medium students were very good. In Pakistan, the concept that it is difficult to get good marks and achieve success without English was rejected by the results of this research.