Is 45+ a bit of a stretch for my results?

[schoolstudent115]

I'm doing Physics.
All of these sacs are Unit 3.
SAC1:  92% -- Class average about 60% from what I remember (might be lower). Perceived difficulty (consensus was) = 6/10
SAC2: 100% (only 100% in cohort)-- I estimate the average was 50-55%. Percieved difficulty = 8.5/10 (At least as difficult as vcaa exam.)
SAC3: 90% (made a very avoidable mistake that cost me 7% r.i.p.)  -- Average probably similar ~low 50's. Perceived difficulty = 9/10 (Very difficult, harder than VCAA exam for sure.)

If I had to estimate my ranking for each sac, and overall (the cohort is ~38-40 people)
1: 1-3/40
2: 1/40
3: 1-4/40 (maybe 2-4)

If I get at least 94% in exam, is 45 raw even possible? What is the sort of range of study scores I can get with an exam score of say, at least 90%?