"Shopping" for the Class-But Not Totally at Your Pleasure Yale has a unique style in her educational system which is known as the "shopping period". It is Yale's course selection period during the first two weeks of classes which allows you to participate in courses that interest you without enrolling in them right away. you get to find where your lifelong research interest lies. After you arrive on campus, you choose courses to visit during the course selection period. What's more, in the first five minutes of the class, whenever you feel the lecture is too boring for you to follow, you can leave the classroom at will. Then from those you visit, you will enroll in four or five a semester. Please be aware that classes conducted during the first two weeks of the term are regular, full-fledged classes with readings and homework.