The 4-hour test measures general verbal and mathematical skills. It does not test specific knowledge or achievement gained in a particular subject area. Schools vary immensely in what they require you to cover as well as in their requested length. Writing ability, maturity and personal uniqueness are considered, as well as your career goals and aspirations, areas of interest, educational background, and reasons for pursuing further education. Through this statement, you want to convince schools of the asset you will be to their institution.
Most experts say no.
Your statement should be positive in all respects, and you should not attempt to deal with such issues unless you are asked. The Renssalaer Polytechnic Institute has a page regarding these essays which offers tons of helpful advice. Along with your application, some schools may request that you schedule an interview as well. Where You Should Be and When Timelines are incredibly helpful when trying to figure out where you should be in the application process. Browsing through guides to graduate programs and deciding where you would like to apply.