My English Teacher at school said that three 6's will only get me a 25 Raw in English.
This isn't true. Going solely off last years exam scores (so this assumes your internal scores match your external scores):
All 6s would give you 36/60, the B range is 33-36, B+ is 37-40.
34.9% of people got a score in the range of 37-60 (B+ to A+)
52.7% of people got a score in the range of 33-60 (B to A+)
26% of students get a score of 35+
53% of students get a score of 30+
So if you got 36/60 (again, I'm ignoring sacs so this isn't 100% accurate) then you'd get a score in the range of 30-35 (probably towards the lower end of that).
To get a 35 you need to get a score in the top 26% of students, which would be the top half of a B+ (so 39/40 out of 60, which is approx a 6.5 on each essay) - and you'd need SAC scores to match (or a better exam score if your sac scores aren't that good).