marytheres, I don't know what test your ds took today (the good thing is - you will eventually get to find out!)... but fwiw, it's similar in some ways to the types of neuropsych tests my kids have had that are highly dependent on vision... so I'm guessing that you might be able to draw some comparisons from percentiles reported from the testing even if he doesn't have exactly the same tests as he did last year.
Let us know what you find out!
polarbear
ps - have you noticed that his vision therapy helped?