This was true up until Nationals, but officially, MIT's policy is that after Nationals their tests will be made public. If you click on the link for 2018 tests on scioly.mit.edu/archive, it does say that the tests will be released after Nationals 2018.MIT tests are prohibited from being traded; that's why they have watermarks. You're only allowed to access them if you went to the competition, and if it's found out you traded them, your school is put on a blacklist. Even if you wanted to go but couldn't make it, you still aren't allowed to see the tests no matter what year it is.How about releasing this year's test archive for those of us who couldn't make it to the competition?
It's after Nationals!
EDIT: And all prior years of MIT are public. Some of the old links are supposedly broken, but definitely the 2017 MIT tests we used from the website this season.