求翻译：但是，有些学校开始了第二课堂，也就是原本属于学生的休息时间也要上课。但是为了更好，更快的提高学生的成绩。学校不得不这么做是什么意思？

However, some schools began the second class, which is originally part of the rest students have classes. But in order to better and faster to improve student achievement. The school had to do

However, some schools have started the first 2 classroom, students are also those who originally belonged to the rest time is also to attend classes. However, in order to get better, faster increase the academic performance of students. Schools were compelled to do so

But, some schools started the second classroom, also is belongs to student's relaxation time also to have originally to attend class.But in order to better, quicker enhances student's result.The school can not but such do

However, some schools began the second classroom, which originally belongs to the rest of students to classes. But in order to better, faster and improve student achievement. Schools have to do

However, some schools began the second class, which is what belongs to the student's rest time also to the class. But in order to better, faster and improve student achievement. Schools have to do