Disney 8704- That has to be so stressful. I remember when my husband was active duty (now retired), we spent a lot of time studying for tests. We not only listened to question/answer cassette tapes in the car (yeah, we are old), but we sat down every night with the study manuals and I quizzed him.
We still laugh today about those days. I knew the answers as well as my husband and I had no idea what those things even looked like, but I knew what they did. I remember one day I visited him on the ship and he took me down to one of the rooms he worked in. There was this odd looking round thing sticking up from the floor. He looked at me and asked me if I remembered the questions about a gyrocompass. I said yep. He said, "Well, there it is."

He did the same with a few other things. I'm sure one day that wealth of info will help me as much as the algebra I took in high school
I hope your husband is able to go in to this test with a clear mind. It is awful when you have so much pressure to do well. I don't test well myself, so I understand. It causes me to make stupid mistakes.