单个班级学生成绩管理系统:本管理系统只能管理一个班级．本来我开始的构想是可以管理多个班级，而且可以选择课程的，但由于这也是我初次学习ＶＣ的一个作品，及能力和时间的限制，只能做到这个样子．有时间一定给大家拿出个更好的-single class performance management system : the management system can manage a class. I originally started the idea is to manage multiple classes, but can choose courses, But since this is my first study of a VC works, and the ability and time constraints, can do like this. Time will give us a better show