Graduate degrees include master's and doctorate degrees. Master's degrees take a minimum of two years to complete. Specific prerequisites including an entrance exam are required for admission. A doctorate degree (or Ph.D.) takes a minimum of three years and may take many more. A part of nearly all Ph.D. programs is writing a dissertation on your field of study.
Master's programs are available in a wide variety of applied sciences, from biology to chemistry, mathematics, forensic sciences, library sciences, medical-related sciences, national defense, physics and geological sciences. While subjects and areas of study may overlap, schools and programs are often unique.
High-paying jobs usually require highly trained employees. The number of applicants with bachelor's degrees has risen. A graduate degree may give you a competitive advantage. Another reason to go is advancement. If you've found employment you love or the field you love and want to continue in it, you may come to a point where your education has to grow for your opportunities to grow. Yet another reason is it may be a requirement. Many jobs don't require a master's or Ph.D., but some do, making the decision to go into the field synonymous with the decision to go the requisite technical grad school.
School and work are very different. Before you commit to a technical graduate program, take some time to investigate the kind of work it will qualify you for. Learn about the day-to-day details of the work. Give the same kind of diligence to choosing a specific school and program. Does the school cater to the kind of student you are? Is it a good value, considering your budget? Do your homework before you go.