Access to Higher Education

Hi so I'm doing an online Access to HE course, I've got two units left and should have it finished in the next three weeks.

I wanted to ask if there's anyone who has done an access to he course in the past and whether their grades have been increased or decreased because I'm quite nervous about that since my grades are so far really great and I've gained the university minimum amount of distinctions too.

If they have changed, how drastic was the change, or how often would you say they change during moderation?