说明：  学生课绩管理系统 高校开发一学生课绩管理系统，该系统由登陆模块，学生模块，教师模块，管理员模块，四部分组成。其功能文件包有详细说明
(Students in class performance management system for college students to develop a class performance management system, which by the landing module, student module, teacher module, the administrator module, composed of four parts. Its functions have detailed description of package)