This study was conducted based on the Theory of Planned Behaviour by Ajzen (1991) aimed at identifying the relationship between attitude, subjective norm and perceived behavioural control to learning practices among students of Boarding Schools (SBP). This study uses a correlational research design involving a sample of 200 low-achieving Form Four students from four SBPs in Johor selected through purposeful random sampling. A Learning Practice Questionnaire by Norlia and Faizah (2016) with values of item (0.98) and individual (0.88) reliability based on RASCH analysis was used to collect the data. The result of the inferential statistical analysis using Pearson correlation shows that there is a significant positive relationship between attitude and subjective norms learning practices (r = 0.44, p<.05), attitude with perceived behavioural control learning practices (r = 0.41, p<. 05) and subjective norms with perceived behavioural control learning practice (r=0.31,p<.05). Therefore, this study proves that attitude, subjective norms and perceived behavioural control of learning practices are interrelated. Hence, SBP students need to have these three elements to increase the potential of learning practices towards achieving excellence.