One important goal of teaching is to achieve learning outcomes. It has been observed in universities that many students have different levels of English language proficiency. However, they study in the same English courses at the school level. The main objective of this study is to learn the challenges that exist in teaching the English language as a foreign language in secondary schools that affect the English proficiency of students. In addition, ways in which these challenges will be overcome is reviewed. The data collection tools were questionnaires and semi-structured interviews to collect data from English language teachers in selected schools. The results found that teachers faced challenges with a lack of authentic materials and multilevel students in the same class. The learning environment and the teaching-learning process were two other critical challenges.