Students not otherwise enrolled during Summer Term cannot be required to attend school during the May Session. Accordingly, although required courses may be offered during the May Session, such courses will not be offeredonly
during the May Session. Some exceptions to this general rule are possible, especially in the health sciences.
帮忙翻译一下 一直看不懂

出国流血的吧

简单说就是没报夏季学期的在五月开始的学期就不要去了，有些要求的课在那会儿会有，但是不只是那会儿有，个别课程可能例外，尤其是health science专业（部分）