问一个SMU PHD的录取过程的问题

shao3wangdiUID: 3396004

我最近问了以下我的status，然后得到下面的回复：
Our head is coordinating with the Dean’s office to discuss potential candidates to send out the offers. XXX (the other prof who interviewed you) and I highly recommend you among all our applicants, but our head has some concern that SMU is not your first choice and that you may want to wait for messages from some other schools to decide whether to join SMU. Since our process is centralized and the final offer has to be made by the Dean’s office near the end of this month. Although we may be able to push and expedite the process, there must be good reasons for our head to fight for the case. I discussed with our head, and he would like to know to what extent you are keen on our program and then decide how to act on it. For example, how long you wish to wait for other schools.
这是个啥意思是属于unofficial accept吗
head和dean's office 有什么区别呢？

hry1225UID: 2754304

head或许是你那个小方向的头头，dean是学院的头- - 感觉这个就是如果你坚持要去SMU的话就会给你OFFER吧- -

温吞水煮鱼UID: 3475184

如果你回smu是我的first choice 给我offer一定会来的话估计 head就会fight for the case了…