Lucid Dreaming Helps with Math Test?

Soo Ive become interested in lucid dreaming after I had a very interesting dream in which was my first time experiencing lucidity. It was the night before a major Algebra 2 test which i did not study for half as much as I should have, I knew nothing. However, when i was dreaming that night I realized I was dreaming and my math teacher was in the dream with me....I began to ask her questions about the topic that the test was over and she covered it perfectly (i suspect the knowledge came from my subconscious). So now I ask, with the ability to lucid dream will one be able to access information thats stored in your head that wasn't available before?

P.S. I ended up getting a perfect on the test.

But of course! I always use dreams to study for tests, don't have to stay up, so its convenient.

Ya vie had this happen but only notice it days after I had the dream but I should probably start asking myself questions