I heard that the school adjusts their student admissions in terms of the candidates' nationalities in order to create an international environment for the students.
ご質問ありがとうございます。
"I heard that the school adjusts their student admissions"=「学校は学生の受け入れを調整すると聞きました」
"in terms of the candidates' nationalities"=「志望者の国籍に関して」
"in order to create an international environment for the students."=「学生たちのためにグローバルな環境を作るために。」
ご参考に。