The term COURSE NECESSITIES can be broken down into two crossword solutions: TEES (4 letters). TEES is an acronym for textbooks, equipment, educational supplies, and snacks. These items are essential for students to have in order to successfully complete their coursework. Textbooks provide the necessary information for students to learn the material, while equipment such as calculators and computers help them to apply the knowledge they have learned. Educational supplies like notebooks and pens are also necessary for taking notes and completing assignments. Finally, snacks provide students with the energy they need to stay focused and alert during their studies.