The purpose of this pilot study is to investigate the relationship between the lifestyle of the students at International Pacific University and success in the form of passing scores. Data were collected using a questionnaire from the students who took an examination for“ Bookkeeping” held by the Japan Chamber of Commerce and Industry. Sleep duration, having breakfast, learning times and concentration times were used as predictors of performance for passing the test. This study was designed using discriminant analysis to determine if these variables were a good predictor of successfully passing the test. Findings from this study demonstrated that there is a significant positive correlation between sleep duration and concentration times in relation to the student scores on the“ Bookkeeping” test. Discriminant function analysis revealed that the sleep duration, having breakfast, learning times and concentration times can successfully classify those who pass or fail the “Bookkeeping” test with a hit-rate of 84.6%.