Divisions within a contest

This one is quite a lot more niche than my other issues I think, but maybe still worth discussing :)

In the Estonian olympiad, we have a system where high-schoolers have 6 tasks available, and their score for the contest is the sum of their top 3 tasks. However, middle-schoolers (by default) only have the first 4 tasks, and all 4 count for their score.

We implemented this by adding a feature that allows hiding some tasks for some users (grouped into divisions), and later I also implemented the scoring rules (which used to just be excel formulas in the results spreadsheet) into CMS, allowing each division to have a different scoring mode. ("scoring mode" is already an overloaded term though.... need to think of better terminology). This also involved implementing the scoring rules in RWS, and allowing filtering the ranking to a specific division.

Would any part of this be a candidate for upstreaming? Or are our rules too weird? :)

Review the existing division-based task visibility, per-division scoring, and division-filtered ranking work in CMS and RWS. First determine which parts are already implemented locally and whether the rules can be generalized beyond the Estonian olympiad example. Done would be a decided upstream scope, with terminology and affected components documented.