So, the rule is you can't grade homework above your own year. So if you're year one, you can only grade Y1 homework, and if you're year two, you can grade Y1 and Y2 homework, so on and so forth. Great, right? Well, no.
The points system gets reset every schoolyear, yet within a few days, Y4 students get to rack up their points by grading FOUR YEARS of homework, while Y1 and Y2 stay behind and have to work way harder to get points, because they have less homework to grade and even if they do, it's always possible a higher-up has already graded it.
This is not only annoying (looking at that "no homework to be graded" page is stupid) but also quite discouraging because it feels like people in Y1 and Y2 can't get recognition for their hard work, because other people come across points easier and thus get the recognition (and awards, and gifts because they're in the top 5 of the points, so on and so forth).
My solution: only let students grade homework from their own year. Of course, this can be paired with the removal of the "no grading friends' homework" rule, because that rule doesn't really make sense either and doesn't add anything to the site, it just causes people to unfriend a lot so they can grade homework.
This rule allows Y1 and Y2 students to have just as big of a chance when it comes to getting points from grading. As for the facts that Y1s can't grade homework until they're level 3, this would only be a problem in the first week or so, since after that most students have gathered enough XP to become level 3. This W1/W2 problem can be easily solved with ATs and Teachers working together, and maybe allowing the another year (possibly Y2 or maybe the highest year on the site) to grade Y1W1 and Y1W2 homework.
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