I found something from ETS. I will register first,if I pass they will give me full refund. Because of the overlapping deadlines, candidates may register for the test before knowing the results of a prior test. Candidates who register for a test before knowing the results of a prior test automatically receive a refund of their registration, test, and surcharge fees if they receive a passing score for that test. To receive a refund, the test codes must be the same on each registration.
l*n
3 楼
Wish you good luck. I got 80 on my subject test. I guess if you are familiar with the subject it should not be hard at all.