高３

Meaning

1. n abbreviation
   third year of high school; third-year high-school student

Example sentences

• 今、弟は小６で姉は高３です。

  Now, my younger brother is in 6th grade elementary and my older sister is in 3rd grade highschool.

• 僕は、高３だよ。

  I'm a senior.

• 俺は、高３だ。

  I'm a senior.