1、提交作业添加限制；

2、服务指标；

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentManageServiceImpl.java

@@ -425,7 +425,7 @@ public class StudentManageServiceImpl implements StudentManageService {
         student.setServiceTag(sysUser.getServiceTag());
         student.setTeacherId(sysUser.getTeacherId());
         studentService.upSet(student);
-        if(new Integer(1).equals(student.getServiceTag())){
+        if(new Integer(0).equals(student.getServiceTag())){
             studentExtracurricularExercisesSituationDao.deleteByStudent(sysUser.getId());
         }
         return userId;