To be classified as a Sophomore you will need 6 state credits, a Junior is 12 state credits, and a Senior is 17 state credits.
Look on page 19 in the Program of Studies for suggested courses for each year as well as the requirements for graduation if you entered high school before the 2007-2008 school year.
If you entered high school 2007-2008 school year or after, look on page 20 in the program of studies for your graduation requirements.