你好：
发现上面回答者的英文问题很大,可能是机器翻译的结果.但感觉内容还算充实,改正所有错误,去掉多余句子,重新组合,并添加结尾句.重贴如下：
There are many rules in my school. First, all the students should wear uniforms and speak Putonghua. Second, boys are not allowed to have long hair and fingernails. Third, the students are required not to smoke. Last, the students should not fight in school and drinking is forbidden.So, these rules will help students behave well at school.
希望对你有所帮助!