مثل ماقال الأخ نايف الجامعه هي اللي تفيدك .. ولكن وجدت سؤال مشابه لسؤالك وحبيت أنقله هنا تطلعين عليه و لكن أنصح انك تسأل في الجامعه نفسها :
What does SX and UX mean for grades?
The SX grade means that a course has been completed satisfactorily, as opposed to UX, which would mean the course was not completed satisfactorily. The SX/UX grades are given for pass/fail courses, such as Reading and Writing Strategies. Since there is no letter grade given, these do not factor into a student's cumulative GPA.