This study explored the major factors that hinder the development of students' oralrncommunicative competence with particular reference to grade 11 students of Arjo HighrnSchool and Preparatory program. For this reason, the study incorporated 36 students out ofrn228. That is, the sllldy covered 15.8% of the targeted population. It also included fourrnEnglish language teachers. As the students of grade 11 were grouped into four sections,rnsimple random sampling technique was employed to determine the representative samplernfrom each group. To gather data from the subjects, the study employed questionnaire,rnstructured interview and observation. To gather data from the teachers,a questionnaire of23rnitems and a structured interview 0/'1 items were employed. To gather information from thernstudents, a close-ended questionnaire of 22 items was designed and distributed to thernstudents. The result shows there are a number of factors that hinder the development ofrnstudents' oral communicative competence. Twelve major factors that hinder students' oralrncommunicative competence are identified. Since the aim is exploring the major factors thatrnhinder the development of students' oral fluency, the researcher selected those factors thatrnare rated more than 50% from highest to lowest as major inhibiting factors. As the resultrnreveals, most factors are related to students, teachers, instructional material and class size.rnSo, large class size, fixed seats that are difficult to move, lack of access to teaching aids,rnemphasis on gram/i1ar and vocabulary rather than speaking, dislike towards practicingrnspeaking shortage of English textbooks that teach speaking, poor provision by the teacher ofrnspeaking activities, poor background speaking experience, teacher dominance in thernclassroom, lack of confidence in speaking, use of mother-tongue, and shortage of words tornexpress ideas and feelings are the major factors.