1）信息维护：

要求：学生信息数据要以文件的形式保存，能实现学生信息数据的维护。此模块包括子模块有：增加学生信息、删除学生信息、修改学生信息

（2）信息查询：

要求：查询时可实现按姓名查询、按学号查询

（3）成绩统计：

要求：A输入任意的一个课程名（如数学）和一个分数段（如60--70），统计出在此分数段的学生情况。

（4）排序：能对用户指定的任意课程名，按成绩升序或降序排列学生数据并显示排序结果

-1) Information maintenance: requirements: Student Information data to document the form of preservation, to achieve the maintenance of student data. This module includes sub-modules include: increased student information, student information to delete, modify student information (2) Information: Requirements: inquiries, inquiries can be realized by name, according to study its inquiries (3) performance statistics: Request: A random input a course (such as math) and a fraction above (such as 60- 70), the statistics in this case scores of the students above. (4) Sorting: Users can specify any course name, by the achievements of students in ascending or descending order to sort data and display results