Abstract
This study aims to investigate the effect of an intensive language course at Majmaah University on improving students' linguistic repertoires. It also explores the perceptions of instructors at Majmaah University on students' performance after the intensive language course. The study also addressed the following questions: 1-To what extent did the intensive language course at Majmaah University improve students' linguistic repertoires? 2-How do instructors at Majmaah University react towards students' linguistic repertoires after the intensive language course? To achieve the set objectives: the study used a mixed-of qualitative and quantitative method. A total of 283 students participated in the study experiments, and eight instructors responded to the interview questions. A paired samples t-test was used to evaluate the students' scores before and after the three-month program. The findings revealed that the students scored significantly higher on the post-test. Qualitative data also showed that improvement was not limited to their linguistic repertoires but also applied to their personal skills.