对于教师:
1,进入该系统时,应该有自己的登录账户和密码.
2,能够对学生信息进行录入、修改、删除和查询(查询可分为姓名和学号查询).
3,成绩管理:可分为成绩分析和成绩排名两个子模块,

成绩分析:（求其平均成绩,及格率和优秀人数和优秀率,最高分和最低分）
成绩排名:I单科成绩的排名,II按总份数排名.

对于学生:
1,学生在登录本系统后,仅支持通过学号查询自己的成绩(For teachers:

1, you should have your own login account and password when you enter the system.

2, the students' information can be recorded, modified, deleted and inquired (the query can be divided into name and school number query).

3, performance management: can be divided into results analysis and grade ranking two sub modules,


Performance analysis: (the average score, the passing rate, the outstanding number and the excellent rate, the highest score and the lowest score)

Ranking: I scores ranking, II ranking according to the total number of copies.


For students:

1, when students log in to the system, they only support their results through a school number.)