臺灣私校大學生常須面臨學貸壓力，甚至須自力負擔生活費用，故在求學期間需同時耗費打工時間已成為學習限制條件，而學生為了打工而翹課造成的學習投入減少，勢必影響在校學習成就。本研究以閱讀投入是否會對學習投入影響學習成就產生調節效果為主要研究目的，並以亞洲大學為研究對象，蒐集4,495位學生在學期間之缺曠課情形、圖書借閱及學習成績等資料，以階層迴歸方法進行實證分析。本研究獲得下列結論：一、大學生曠課次數愈多會導致班排名成績愈差，故應正視大學生低學習投入之存在問題，並擬定如何改善或補強學生學習投入的策略。二、曾有圖書借閱者之學業成績進入班排名前50%之勝算為不曾借閱圖書者之2.3倍，故教學設計應強化提升學生閱讀量之教學策略。三、高缺曠課族群輔以閱讀投入改善學業成績，會比低缺曠課族群來得有效，故針對低曠課族群學生，仍應嚴格要求學生提高到課率；對高曠課族群學生，則應輔以增加閱讀投入之學習補救措施。

Private university students in Taiwan often face the pressure of student loans and high cost of living, so they tend to work part-time while going to school. Skipping classes in order to work part-time might lead a student to decrease student engagement, which, in turn, affects academic achievement. The purpose of this study is to test whether reading engagement has a moderating effect on student engagement and academic achievement. We collected data from 4,495 Asia University students’ absenteeism rate, book borrowing records and academic performance, and then conducted empirical analysis using hierarchical regression methods. Research findings are as follows: 1. The higher the number of absenteeism, the worse the class ranking results. Therefore, we should face up to the problem of low student engagement of Taiwan’s college students and formulate strategies to improve student engagement. 2. Those who have borrowed books are 2.3 times more likely to be ranked the top half in their class than those who have not borrowed books. Therefore, strategies for improving reading engagement should be devised and integrated into teaching. 3. The method of using reading engagement to improve academic performance is more effective with high absenteeism rate students than with low absenteeism rate students. Therefore, low absenteeism rate students should be strictly required to increase their attendance rate and high absenteeism rate students should be assisted with more reading engagement.