The present study examined the impact of study habits of students in Trichy city, Tamil Nadu in relation to Academic achievement, Gender and Faculty. The main objectives were to analyze the study habits of Higher Secondary School students and to compare it in relation to Academic Achievement, Gender and Faculty. The research design is quantitative. The sample was selected randomly out of 180 students—90 were boys and 90 were girls. Out of these 180 students—60 were from Arts faculty, 60 from Science and 60 from Commerce Faculty. The questionnaire was administered for collecting data from the students and t-test and Pearson Correlation statistical methods were used for analysis of data. It was found that there is no significant difference in Mean study habit in relation to gender, and faculties such as Arts, Science and Commerce but there is a significant relationship between study habits and academic achievement of Higher Secondary School students.