One Possible Version

Nowadays, many schools use the way of closed management to manage students, leaving students less freedom to leave the school at will. Students have different opinions about it.

Some students think school is the best place to get knowledge so they should study with a peaceful heart.  Some  students  lack  the  ability  to  control themselves. Once out of school, they may get themselves into trouble.

Some others think they enjoy less freedom and have less time to be with their families and friends. Besides, they get few chances to get in touch with society, which makes them a frog in a well. Therefore, they have less interest in their studies.

Personally I think, it is necessary to keep students at school. But at the same time schools should organize various activities so that students can enjoy their school life.

题目分析：本文是一篇提纲作文。写作时首先要仔细审题，确定人称，时态，文体。内容要点要全面，上下段要使用连接词做到连贯。我们在写作中应当遵循语言表述的经济原则，即用尽可能少的形式表达尽可能多的语义内容，力求简洁精练。根据提纲的提示，写出所列要点，要全面。我们在用词上应该仔细揣摩，准确清晰地表达我们的思想，剔除冗词赘语，使文章言简意赅。

【亮点说明】文中使用了非常好的短语和句子为文章增色不少，比如leaving students less freedom to leave the school at will. Some others think they enjoy less freedom and have less time to be with their families and friends.等。还运用了定语从句which makes them a frog in a well.等。并注意了句子的衔接如：Besides, Therefore, Personally I think，But等。

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