The aim of this study is to examine the effect of the reading comprehension program prepared for primary school fourth grade students on students' reading comprehension skills. In this context, students' attitudes toward reading, reading motivation, fluent reading skills and reading comprehension strategies were considered in the study. The research was ­carried out with a quasi-experimental design. The research was carried out with 353 students. The reading comprehension skills development program prepared by the researcher was applied to the experimental group for a total of 30 hours for 15 weeks. After the implementation of the program, posttests were applied to the experimental and control groups. The students in the experimental group of the reading comprehension program developed according to the results of the research; reading attitude, reading motivation, reading speed, prosodic reading and reading comprehension scores increased significantly compared to the scores of the control group students.