This study was undertaken to discover how fourth-and fifth-grade teachers implemented the systematic Focused English Language Development (FELD) program with English Language Learners (ELL) students. ELL students are not reaching proficiency at a higher rate because of the gap in teachers' understanding of effective teaching practices and processes during English Language Development (ELD) instruction. In this qualitative study, the investigator conducted interviews and lesson observations to uncover how 12 fourth- and fifth-grade teachers used this program. Participants were asked several questions that involved how they have used the systematic FELD program. Contributors were asked what strategies they implemented, along with acknowledging those practices that were most and least successful, obstacles encountered and overcame, and lessons learned from using the systematic FELD program. The study revealed how teachers approach instruction based on their knowledge, training, and experience when deciding appropriate strategies to put into practice. Teachers indicated their perceptions, methods of practice, and apprehensions toward the systematic FELD program and why it is not being used. Data analysis consisted of a comparing data collected that involved sorting data into themes and categories. Interviews and observations revealed that teachers used many instructional approaches and developed a risk-free environment in which ELL students could be successful; however, none of the participating teachers used the systematic FELD program in their classrooms. Teachers used alternative methods based on their experiences from previous training to educate and support ELL students. The attitudes of each participant showed a range of perception and concern regarding the effectiveness of the systematic FELD program. As well, a number of things contribute to this problem, but researchers have not found a solution. [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://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]