A recent study on the free selection of library books for recreational silent reading periods focused on the difficulty of material chosen and on the relationship between the students' reading ability and the readability of a book. Three groups of 24 students completed an interest inventory form, and their reading ability, sex, and reading interest areas were recorded. One week later, the students' library books were analyzed for readability and then returned to the student; two weeks later, students were questioned to insure the status of the reading of the selected books. This process was repeated three times. Findings indicated no significant relationship between students' reading ability, sex, or stated interest area, and their ability to choose reading materials at levels appropriate to their reading ability. Also, there was no significant tendency in free selection for students to choose books within their stated interest areas. Results suggest school librarians should be aware that students tend to choose books with readability levels and topics that differ from their tested reading abilities and stated interest areas. (SRT)