Longer essays may also contain an introductory page that defines words and phrases of the essay's topic. Most academic institutions require that all substantial facts, quotations, and other porting material in an essay be referenced in a bibliography or works cited page at the end of the text. This scholarly convention helps others (whether teachers or fellow scholars) to understand the basis of facts and quotations the author uses to support the essay's argument and helps readers evaluate to what extent the argument is supported by evidence, and to evaluate the quality of that evidence. The academic essay tests the student's ability to present their thoughts in an organized way and is designed to test their intellectual capabilities.
(The basic part pf the introduction is the thesis statement. The strength of the thesis statement depends on how well it reveals the topic and its classification. It is to justify the specific categories chosen for this classification).
The thesis statement has a very determined logical structure: theme ® its classification ® chosen categories (the number of categories is suggested to be limited to three in order not to blur the classification).
For instance: Exchange students can face three benefits: education, experience and cultural exchange.