Education is essential in determining how people and civilizations will develop in the future. Socioeconomic status (SES) is a significant predictor among the many elements affecting educational achievement. The statement of the problem is “Impact of socio-economic status of higher secondary school students studying in different medium”. The study's data was gathered at random from representative samples of 400 higher secondary school students. The samples consisted of boys and girls both 188 students from Tamil and 212 students from English medium of higher secondary school. For the present study Investigator modified the tool Socio economic status index (SESI) which was conducted and standardized by Prof. R. P. Verma, P. C. Saxena and Dr. Usha Mishra. Hypothesis of the study is, there is no significant relationship between socio-economic status and the selected personal variable medium of instruction. The study reveals that English medium students are better than Tamil medium students in their socio-economic status in higher secondary school.