If you're not sure, please check with a Career Counselor in the Office of Career Services. It will make you a more marketable candidate for employment. A graduate degree would create opportunities for growth and advancement in your current career. You need to plan early for graduate school.
Most graduate schools require applications with essays as well as entrance exams.
For information on graduate schools and their requirements, as well as scholarship information and other pertinent information, please stop by the Office of Career Services. You may also want to talk to a Career Counselor to discuss all of your options.