Sorry, I don't understand this point. Are you suggesting that by losing a grade this turn we might lose an action next turn improving them? Isn't that the same as the plan for keeping our grades the same over two turns anyway?
Right, allow me to explain. During the first year turn, we chose to ignore socializing as Kallen. However, Sophie noticed we were always alone and offered to be our friend, integrating us into the Misfits. That time, we had to make a choice: we could have rejected her friendship, in which case we would have been marked as weird at school since we actively chose to be a loner which would have made them suspiscious. Or we could have done as we did and befriend them, in which case since we had already allocated all our time for the year we were pressed for time and had to roll to see if we could make time for them, with us losing a random action for the time for that year if we failed. At that point,
@PoptartProdigy mentioned he liked to include random events like that one in the yearly turns to mix things up and the next year we had the whole Jaron thing; however, what we gathered from that instance is that sometimes there are concecuences that are not included in the actions since they are common sense: example, having no human Friends marking us as weird when disguised as human.
In this case, I am pointing that us dropping a grade might cause a similar problem. Our mother is a school teacher and she chose that job. Common sense dictates that she thinks education is important because of it. Furthermore, she is Elite at teaching so she is very good at it and put the time to become that good, plus she is likely the one who designed Kakara's childhood education to make it so that, as you like to point out, she knows calculus before she is ten. All of this shows that she cares about her daughter's education so, if even though she has had a pretty advanced one she drops her grades, she will realize that something is wrong and try to correct it. Given that events interrupting our yearly turns are a thing, she is more likely to do something about it as son as she notices the problem rather tan waiting for next year, which means remedial lessons with her, which means time constraints, which means we risk losing a random action this turn, among other things like higher scrutiny in the next ones.
All these things are not explicitly stated but they are things that are natural consecuences and that should be taken into account when planning since they have been shown to matter. When I pointed it out to you, I did so with the intention of telling you that you should adjust your pitch to make it seem like the chance of that happening were smaller tan they are and that if it does happen the concecuences wouldn't be as dire since your plan is more focused on training than time sensitive things but if you hadn't noticed...
Edit: Basically, if with how Smart Kakara is her grades drop anyways, that is a pretty big indication for her mother to notice something is up. We don't have much information about her but the one we do have seems to point that she would take action if that were to happen.