質問: how do you say this in english (us)? 私は英語を塾で高校生に教えています。 how do you say this in english (us)? 私は英語を塾で高校生に教えています。
回答: i teach english to high school students in cram school. *note that 'cram school' is not a thing in the us. most americans would not know what that is. you could instead say, "i teach english to high school students."