学生成绩管理系统，实现功能比较全，分为学生登录和教师登陆两大权限。教室登陆后，可对学生信息进行查询，成绩进行查询、统计，增删查改等功能；学生登录后仅能查看自己的成绩和修改自己的个人信息。-Student achievement management system, feature comparison, teachers and students log into landing two rights. After landing the classroom, students can query the information, query results, statistics, CRUD functions　student login can only view their own achievements and modify their personal information.