This paper aims to investigate if there is a relationship between English language proficiency and the overall academic performance of Preparatory Year students in three faculties: Engineering, Business (including Business Administration, Economics and Political Science) and Informatics and Computer Science. Data was obtained from the Student Record System of 566 students and three sets of statistical analysis were performed. The results indicated that there is a significant but moderate positive relation between the students' proficiency in English and their overall academic success. Specifically, the higher the English proficiency of students on entry to the university, the better they performed in their degree area courses as well as in their English levels.At the British University in Egypt (BUE) the majority of students are Egyptian. Literary Arabic is the official language, with Egyptian Arabic the vernacular. English, however, is the medium of instruction in all departments and faculties at the university. Therefore, to be admitted to the university, all students needed to score 105 to 119 (Pre-Intermediate) on the Oxford Placement Test which is equivalent to IELTS 3. However, since the writing of this paper, with the exception of the Faculty of Nursing, the entry score has been increased to 120 to 134 (Intermediate) which is equivalent to IELTS 4. English courses at the BUE are taken alongside the students' degree area courses as language support and students must pass them to progress to the next level. In addition, passing English courses has become a condition of progression in the faculties (i.e. Intermediate English is a condition of progression to Degree Year 1; Upper Intermediate English to Degree Year 2; and Advanced English to Degree Year 3). Students entering the BUE come from three main educational backgrounds: Thanaweya Amma, American High School Diploma and IGCSE/GCSE. Interestingly, Murray (2010) states that "despite meeting the English language entry criteria of their receiving institutions, many NESB students still struggle to cope with the linguistic demands of their degree courses as a result of inadequate levels of proficiency" (p.61). Along similar lines, reporting on the weaknesses of Yemeni Arab students Abbad (1988) states that "in spite of the low proficiency level in English of most applicants they are accepted into the department" (p.15). In addition, there has been concern and debate over the level of the English language proficiency of students upon entry to universities across Australia and in other countries as well (Barthel, 2012). Therefore, based on the above findings and the recommendations of Dooey (1999) who suggested that "each receiving institution make its