The ritual I’m about to propose was the one I gave her. It worked well enough that I feel it would do anyone studying some benefit. I’m even using it now. lol
First off I’d like to say that I don’t think a full evocation would be necessary in order to get help with studying from these spirits. In some ways I think that an evocation would be rather distracting to the study process. This ritual while seemingly small produces a massive result as I’ve seen so far.
The first thing you do is clear off your study area and make sure there is nothing there that can distract you. (drinks and whatever else are fine as long as it’s something productive to you that you’ll probably wind up going and getting later) Set down your book or homework assignment in front of you on the table/work area where you can comfortably see it and put two blue candles one on either side towards the top of the work area just outside of your peripheral vision. Take the seal of the planet mercury and place it in between those two candles, light the candles and open the planetary seal in the same way you would a sigil. You’ll begin to notice a focus within the room that wasn’t there before as the spirits gather in the room making their presence known. State your intention of having them help you learn and memorize the material set before you and begin studying. When you’re finished studying you can request their aid in the classroom as well and have them follow you until you’re done taking the test if you want. After all that close the ritual as you would any other with whatever banishings or whatever as you see fit.
This isn’t the entire ritual I gave her. I left it pretty open ended because I’m sure if you’re on this forum you’ve probably got your own ways of tweaking it to your liking.