Previous studies about writing assignments in higher education have explained that the library research paper, report on experiment, summary, and article/book review were the most common writing assignment tasks assigned across disciplines. No previous studies have explored writing tasks in the TESOL discipline at a national level. In this study information on 120 writing assignments, gathered directly from TESOL professors in the United States, with 28 available online, were analyzed to (a) explore the writing tasks frequently assigned to TESOL master's students; (b) examine the importance of the writing assignments for course evaluation; and (c) compare TESOL assignments with those in social sciences, humanities, and the arts. The study results will help to interpret characteristics of writing assignments in TESOL programs and to infer skills required for the writing assignments in the TESOL field. Also, the study will help instructors of English for academic purposes in TESOL programs guide and prepare nonnative-English-speaking students.