It annoys me that they are totally compromising the subject tests by putting like 10 of 50 problems on them that are available on the Internet. They may have been able to get away with recycling in the past, but it doesn’t work at all in today’s environment.
I would prefer if all these tests were officially released. If some people have them, everyone should have them. The free answer sections of the AP exams are like that. You can see the past exams for 20+ years. The same things with British A-levels, for which past papers are available. I don’t see why it is harder to write new multiple choice problems than free answer.