You have to take the DMV exam before you can apply at all. The test is usually only given once a year normally around March or April. A college degree can help you but they look for work experience a lot so they know you have experience with the public and with cash handling. If you check the bulletin and it doesn't have the exam it's because it's currently not being held. When you take the test you get put on a ranked list. Once you're on the list you become list eligible or reachable at a 1, 2, or 3. You can still apply but the first three ranks are priority. Hope this helps at all.