
Originally Posted by
zxc
"Grade" is used for elementary, middle, and high schools.
For high school, you can alternatively say that someone is a freshman (9th grade), sophomore (10th grade), junior (11th grade), or senior (12th grade), or you can say that they are "in their freshman year", "in their sophomore year", etc.
And then it gets confusing because these also cross over to someone's undergraduate studies in college (someone in their first year of college/university is also a "freshman", et al).