The study investigated the relationship between achievement motivation, study habit and educational career of secondary school students in Rivers State, Nigeria. Four research questions and four corresponding null hypotheses guided the study. Correlational research design was adopted for the study. The population for the study consists of 18,240 SSII students in all senior public secondary schools in Rivers State. A sample of 1,200 SSII students was drawn through multistage sampling procedure using cluster and simple random sampling techniques. Three instruments titled “Achievement Motivation Scale” (AMS), “Study Habit Scale” (SHS) and Educational Career Scale” (ECS) were used for data collection. Face and Content validities of the instruments were ensured. The Cronbach Alpha reliability coefficients of (AMS), (SHS) and (ECS) were computed to be 0.79, 0.81 and 0.77 respectively. The data collected were analyzed using Pearson Product Moment Correlation for the research questions while probability values were used to test their corresponding hypotheses at 0.05 alpha level of significance. It was found that there is significant positive high relationship between achievement motivation, concentration during study, time management, organization of study task and educational career of secondary school students in Rivers State independently taken. It was recommended among others that; parents and guardians should always provide enough study materials such as textbooks and computers, that will enhance the study habit of their children/wards positively.