oh professor i also forgot to mention there is higher education after the high school level, which would be completed at a university or college.

1st year college students - freshman
2nd year college students - sophmore
3rd year college students - junior
4th year college students - senior

however, your standing in colleges and universities are based on the number of credits you accumulate (i.e. it's possible for someone who has been at a university for 1 year to have sophmore standing).