What are the name stages for high school?

There aren't universally named stages within high school like there are in elementary school (e.g., kindergarten, 1st grade, etc.). High school is generally just divided into:

* Freshman year (9th grade): The first year of high school.

* Sophomore year (10th grade): The second year of high school.

* Junior year (11th grade): The third year of high school.

* Senior year (12th grade): The final year of high school.

Some schools might use informal terms like "underclassmen" (freshmen and sophomores) and "upperclassmen" (juniors and seniors), but these aren't formal grade designations.