It's a first try, and it may not go as well as I would have liked. I will be honest: I pushed this as hard and fast as I could, while still taking time to review it for errors. However, I had a deadline: the test is coming up in a couple of weeks. If I don't have this up now, I miss an important window of opportunity.
I have read up on Kindle publishing in the past. I have read how to convert a Word file, and I've read that the easiest thing to do is to post a .PDF. I opted for the .PDF because of the extra care that needed to be taken with all the images in Word files. There are a lot of images in these tests.
That being said, Kindle gave me a warning about Bad Things that might happen converting a PDF. From the preview, I think that might've occurred. I thought that a PDF file would be better for educators -- I many have been wrong about that.
It's a little early yet. I'll know soon enough. And changes can always be made at a later time and uploaded.
Time will tell.