Students are examined formally at the end of each part and are awarded a degree classification for each part. The Part II classification is usually, but incorrectly, considered to be the classification for the overall degree. Most subjects are examined in all three years; for example, the Natural Sciences Tripos has examinations for Part IA, Part IB, Part II, and in some subjects, Part III. The English and History Triposes have preliminary rather than full examinations at the end of the first year.