If you go to school full time (at least 15 credits per semester), you can complete your degree in two years. However, the average amount of time it takes to complete an associates degree in the U.S. attending school part time is six years.Though associate's degree are two-year programs, it will take longer if basic skills courses are needed.ome schools offer part-time programs which take 4 years. It is typically 80 to 90 credits, which, if you … do the math, comes to 15 credits per semester for 90 credits, which is a pretty full load. My law school required 86 credits.