As the person in charge of my club, I'm responsible for making sure that the communication between the school and the club goes smoothly.
I also take care of various documents that need to be submitted to the school.
ご質問ありがとうございます。
"As the person in charge of my club,"＝「クラブの責任者として」
"I'm responsible for making sure that"＝「私は～が実行されることの責任を負っています」
"the communication between the school and the club goes smoothly."＝「学校と部活との間のコミュニケーションが円滑に行くこと」
"I also take care of various documents"＝「様々な書類もしています」
"that need to be submitted to the school."＝「学校に提出する必要があるものを。」
ご参考に。
アメリカ合衆国 
