The researcher in the current study utilized a qualitative, single case study methodology to explore upper elementary teachers' perceptions of the effects of guided reading instruction on their fluency instruction, their efforts toward students' self-efficacy in reading, and their comprehension instruction. Classroom educators from Grades 3, 4, and 5 completed an online survey, and a subsample of participants completed a semi structured follow-up interview. Participants responded to questions and probes designed to target their beliefs about guided reading instruction at the upper elementary level and how those beliefs affected their fluency, self-efficacy, and comprehension instruction of upper elementary students. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]