university of dayton 申请问题

他们学校网站关于成绩单有这样描述：Official academic records of all previously attended colleges or universities must be submitted directly from the colleges or universities to the Office of Graduate Admission Processing in order for your application to be considered. Hand-carried transcripts, official copies marked
Issued to Student
and unofficial copies are not acceptable. 可是国内的学校哪个会帮你寄送成绩单哦，都是盖好章封好交给学生的，那么我自己寄送可以吗？和自己的申请材料放在一个包裹里可以吗？
还有他们说：the University of Dayton has a staff member who will complete an international credential evaluation. 这个怎么核查哦，推荐信的老师又不懂英文，难道打电话问吗 ？ 还有成绩单怎么核查，如果打电话到教务处，他们不理睬怎么办呢？着急ing
还有这个学校的EE master deadline是多少？送分的code呢？网站貌似都没有写