The study focused on finding out the relationship between peer group pressure, study habit and academic achievement of secondary school students in Ebonyi North Education Zone of Ebonyi State. Three purposes and three research questions were formulated to guide the study. Three hypotheses were tested. A correlational survey design was adopted for the study. The population of the study was twenty-four thousand three hundred and sixty nine (24,369) secondary school students. Multistage sampling procedure was adopted for the study. 300 students were randomly sampled for the study. Instrument for data collection was a structured questionnaire titled Peer Group Pressure, Study Habit and Academic Achievement. The instrument was validated by three specialist. The internal consistency of the instrument was tested using Crombach Alpha procedure which yielded an overall index of 0.89. Data collected were analyzed using linear regression for research questions. The hypotheses were analyzed using regression tool. The results revealed a negative relationship between peer group pressure and academic achievement; a strong relationship between study habits and academic achievement, and a high relationship between peer group pressure, study habits and academic achievement. Furthermore there is a significant relationship between study habits and academic achievement, and between peer group pressure, study habits and academic achievement. It was recommended among other things that students should pay much attention to their study habits in order to improve their academic achievement