Academic grading of students is determined by his learning done in a particular period of time. A grade is a primary indicator to judge such learning. It's a common believe that the higher grade achiever learn more than a lower grade obtainers learning. Even so, many studies and experiences conclude that there are numerous factors responsible for academic achievement. No single factor can be count into consideration for predicting grades. So many factors may be inter playing like study culture, IQ, gender, study habits, year level, age, education level of parents, birth order, social status,...