It is important for practitioners and researchers to evaluate advantages and disadvantages of E-Learning and determine different factors which affect its outcomes. The first aim of this research is to compare smart schools with traditional schools in terms of school connectedness, academic motivation and academic achievement. Secondly, this research tries to assess the role of seven factors (including content, technical supports, ease of use, reliability, computer self-efficacy, expert and culture) in E-Learning outcomes and establish the degree of importance for each factor. The results revealed that there is a statistically significant difference between students in smart schools and traditional schools. Also the results of ranking by MPLUS 3.00 software and PCA method demonstrated that technical support is the most important factor which affects E-Learning outcomes.