A research project on study habits was conducted at the University of Khartoum, Sudan. This report includes: (1) an overview of the university and the background to the study; (2) previous research on study habits undertaken at the University of Khartoum and elsewhere; (3) the project goals and procedures; (4) findings concerning language proficiency testing and contributions to academic success; (5) anecdotal data obtained from interviews, diaries, and observations; and (6) recommendations based on the findings. Language proficiency tests in Arabic and English reading and in Arabic and English dictation were integrative measures, testing global skills related to general language proficiency. The study sought to determine the effect on university performance of the following variables: the Sudan School Certificate, interviews, secondary school attended, proficiency tests, and university English final examinations. Eight months after the orignial testing, subjects were retested in reading and administered a questionnaire. The conclusions are that English language proficiency is a major problem for the preliminary-year students and that there are potential problems of a linguistic and an attitudinal nature with Arabic as a medium of instruction in the university. (SW)