In the education sector, approximately 1.6 billion learners globally were impacted by the COVID-19 pandemic, with English as a second language (ESL) learners being among those negatively affected due to the sudden closure of schools. The purpose of this basic qualitative study was to explore ESL teachers' perspectives on the change of instructional practices for English language learners during the pandemic. The research addressed ESL teachers' perspectives about how the delivery of instruction to ESL students changed during the COVID-19 pandemic and their perspectives on the challenges they faced when adapting or modifying their instructional methods to meet the unique needs of the ESL population. The study was based on the conceptual framework of Krashen's monitor model, specifically the acquisition-learning hypothesis. Data was collected through semi-structured interviews with 10 experienced ESL teachers. Thematic analysis unveiled four primary themes derived from the interviews: The COVID-19 pandemic interfered with the delivery of instruction to ESL students, teachers felt unprepared for the sudden disruption in teaching practices, teachers found the transition to online teaching challenging, and teachers required support in dealing with the specific challenges posed by the pandemic. The study results provide valuable insights into the experiences of ESL teachers during the pandemic, shedding light on their challenges and identifying the need for preparation and support to transition to online learning for both ESL learners and educators. The study findings contribute to positive social change by furthering knowledge and understanding of ESL teachers' experiences teaching remotely during a pandemic and what they need from administration to successfully teach remotely. [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/en-US/products/dissertations/individuals.shtml.]