This qualitative phenomenological study focuses on the influence of technology applications and usage on student engagement in the classroom setting for high school (9th-12th grade) students and their teachers at a high school in New Mexico. The literature reviewed includes findings that technology applications and usage influence student engagement. However, there were gaps in literature in sharing teacher's lived experience. The theory guiding this study is Bandura's social cognitive theory. A qualitative phenomenological framework was followed to collect data from ten 9th through 12th-grade teachers. Individual interviews, focus groups, and non-participant observations were used as data collection approaches to address the central research question, how does technology applications and usage influence student engagement in the classroom? Data were analyzed through thematic analysis, constant comparisons, and observational field notes. The study's findings resulted in five major themes, which are reviewed along with implications and future study recommendations. [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.]