The students will present on stage what they have been learning this year.
Some will act this out in the form of a play.
The presentation will be done in the gym.
ご質問ありがとうございます。
"The students will present on stage"＝「生徒たちは舞台で発表します」
"what they have been learning this year."＝「今年、何も学んできたかについて。」
"Some will act this out in the form of a play."＝「劇として演じる生徒もいます。」
"The presentation will be done in the gym."＝「体育館で発表は行われます。」
ご参考に。
アメリカ合衆国 
