It's most likely a GOOD thing, don't worry. Both my German and music classes had 3 people in them, so we joined with our other campus for assessments. We didn't have the same SACs so I have no idea how they ranked us.
MHS people are, well, the elite, no? So look at it this way.
- Join with a crap school with dumb students. For some reason (and it happens more often than you think) you stuff up a couple of SACs and one of their students is ranked higher than you. Then they do shit in the exam, and you're dragged down with them. You'd have to be ranked no.1 or 2 and ace the exam to get a good study score.
- Join with a school like MHS and their students are ranked higher than you are in SACs. Since they're freakin geniuses (I know I'm generalising, bear with me) they kill the exam, and your whole cohort gets pulled up. To get the same SS you'd get if you were ranked no.1 when joined with the crap school, maybe all you'd need is around no.15 ...