"How many more people do we need to make two classes?"
"How many more people would make two classes?"
"How many more people do we need to make two classes?"
["how many more people" 「あと何人増えたら」](https://eikaiwa.dmm.com/uknow/questions/39364/)
"do we need" 「必要がある」
"to make two classes" 「ニクラスになるために」
"How many more people would make two classes?"
"would make two classes" 「〜でニクラスになりますが」
オーストラリア 
