HI， 朋友，
我的情况是这样的， 我在另一个大学做PRE-OPT，FULL TIME (EAD)工作 , 同时, 原来学校保持我的GRA 身份,（也注册了二个研究学份，因为必需的）， 付部分的工资给我,因为考虑到没有这个GRA, 学费不能WAVIER,我的问题是, 我能同时有F-1 pre-OPT 和 GRA 注册 学生？我不知道乍么确定，最后一学期，我只注册了二个研究学分（不上课， 只写论文）。时间从20 小时减少小于20小时 /周就可以了？
---现在做OPT 这个学校的回答：
If you were are truly on pre OPT, then you could not work more than 20 hours weekly.
The difference between pre-OPT and post-OPT is that on pre-OPT, you still have coursework left. It does not have to do with whether or not your graduated yet. If you have completed all coursework, you can start post-OPT while you do research and write your thesis/dissertation. If you have coursework left, you are limited to 20 hours or less of work. If you do not have coursework left, but still have research/thesis/dissertation to write, then you can do Post-OPT and work over 20 hours. Again, you are not to be registered full time and be working full time.
我的问题： 这里说的COURSE 是指上课？， 研究学分算不算COURSES？
在这里, 我感谢863211 给了我很多回答, 我也其本定了, 但是在和我原学校沟通前, 我还想再请863211 和其它朋友再帮助回答一下.