At the two campuses of St. John's College, U.S. and a few other American colleges with a similar version of the Great Books program, a "tutorial" is a class of 12–16 students who meet regularly with the guidance of a tutor. The tutorial focuses on a certain subject area (e.g., mathematics tutorial, language tutorial) and generally proceeds with careful reading of selected primary texts and working through associated exercises (e.g., demonstrating a Euclid proof or translating ancient Greek poetry). Since formal lectures do not play a large part in the St. John's College curriculum, the tutorial is the primary method by which certain subjects are studied. However, at St. John's the tutorial is considered ancillary to the seminar, in which a slightly larger group of students meets with two tutors for broader discussion of the particular texts on the seminar list.