下面短文中有10处语言错误。请在有错误的工方增加、删除或修改某个单词。
增加：在缺词处加一个符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意： 1. 每句不超过两个错误；
2. 每处错误及其修改均只限一词；
3. 只允许修改10处，多者（从第11处起）不计分。
I often go to a weekend school. So did many of my classmates. This seems popular among students. Good weekend schools have excellent teachers which help us improve our studies.
Besides, we get to know students from another schools and learn about their campus of life.
So every coin has two sides．Our school work is already a heavy burden．Extra lesson often take up too much of our time. In addition, pay lots of attention to the extra lessons will affect their school subjects．We may also find ourselves very tired on Mondays to concentrate on the lessons in our own school. We should think seriously about this issue and make best use of our time．