Tweety, I'm glad to know that you are thinking of going back to school, good luck. I am presently enrolled at Northern Arizona University MSN- Nurse Practioner Track. I am taking 6 credits a semester (2 courses) while working full time and it works just fine, it will take me 3 years to complete the program. Tuition is about $250 a credit hour. I will start my third year in Janurary and will be doing nothing but clinical for the last year, 800 hours. I really enjoy the program and I have not found it difficult at all, I have a 4.0 GPA at this time. Again good luck.