This study begins such an examination and examines students' definitions of English using written processes from 58 respondents, as previous research has shown that school and higher education graduates in Oman are lacking in English communication skills. The causes of this deficit, meanwhile, have not been examined from the viewpoint of the pupils. Communication abilities, opinions about how im-portant they are, and how they are taught in institutes of higher learning. The findings show that these fundamental abilities are neither explicitly or implicitly taught, which contributes to the shortfall being studied. In this age of globalization, an engineer's ability to com-municate in English is just as crucial as their fundamental technical talents. Businesses require English as a worldwide communication tool as Korea implements an export-oriented economic agenda. The accreditation method for engineering education has been established in engineering domains to fulfill the international standards for engineers. English classes are available for engineering majors in addition to general English courses. This paper's goal is to give a thorough account of the needs analysis for creating an ESP course for Korean engi-neering students. Through the use of survey questionnaires, three distinct groups—students, engineering professors, and industrial work-ers—were divided to analyse demand. Triangulation sources allow for the collection of reliable data, which is anticipated to be helpful in the creation of ESP courses. In three provinces in three secondary education service regions in Thailand, this study looks at difficulties relating to English language teaching and learning as well as the professional development (PD) of high school teachers. There were both closed and open vacancies. Data were evaluated using the century of frequency distribution; problems and PD needs are listed here in or-der of highest to lowest importance. The study's findings can be used broadly, allowing local organizations and institutions of higher learn-ing to offer the proper support and enhance the state of English instruction in Thailand generally.