This research aimed to identify the level of English language knowledge among the students of scientific colleges and the preparatory year (scholarship students) at the Islamic University of Madinah. The research was limited to identifying students at the meanings of vocabulary and grammar of the English language. The researcher used a descriptive approach to achieve study goals. It applied three tools to collect information from the targeted sample; first, a test for determining the level of students in the achievement of vocabulary which applied to (69) students. Second, a test to determine the level of students in the English language grammar, (73) students took part. Third, a survey to get students’ opinions about the program of teaching English in the Islamic University. (145) students responded to this. The results of the research revealed that the average score for students of academic colleges in achieving English vocabulary is (57.65%). The results also showed that there are statistically significant differences in students ’achievement of English language vocabulary due to the college in which the student is studying  

(Sig. = .000). There are also statistically significant differences in students ’achievement of English vocabulary due to students’ nationality (Sig. = 003, Saudi (M) = 42.25, non-Saudi (M) = 84.76). The research also revealed that the average score for students of academic colleges in achieving English grammar is (52.32%), which is less than vocabulary achievement. It was also found that there were statistically significant differences in students 'achievement of English grammar due to the nationality of students (Sig. = .012 Saudi (M) = 42.77, non-Saudi (M) = 67.67). The researcher surveyed (145) students about the English language-learning program offered at the scientific colleges of the Islamic City University. The results of the survey indicated that students are generally satisfied with the program, courses, and materials. it contains are satisfactory to students as well. The researcher recommended more study of English language knowledge for students of the scientific colleges in the Islamic University, considering the student’s academic level within the college.