The author examines the effects of the sustained silent reading program on cultivating students' habits and attitudes in reading books for leisure. The author used a time-series design and measured students' reading habits and attitudes three times in twelve months. It was expected that if the program created positive effects on cultivating students' habits and attitudes, significant improvements in them would appear during implementation. The results supported this expectation. After some months, the number of students reading books for leisure during the program increased. The number of students who agreed that reading books for leisure was pleasurable also increased. However, the number of students who spent more than one hour reading books for leisure after school decreased. Other programs should be launched to complement the limitations of this program. (Contains 3 tables.)