I don’t know anything about what is typical in Canada. But here in the US, you aren’t LIMITED by number of credits, but by space. There is a LOT of info to pack into one page, and it’s really hard to do–I spent a lot of time on it and finally decided there was no way except to limit it to what was achieved 9th through 12th, and actually I asked a few admissions departments and they said that was what they preferred. They were smart enough to figure out that if you had a more advanced math class, you’d had the previous class. If 9th grade listed French II, they could figure out you’d had French I somewhere along the way. My kid had two foreign languages going, lots of fine arts and social sciences studied, AND more than 4 English and math credits, just counting 9th grade and up. I couldn’t waste the space, as I heard multiple times that an additional explanatory document was OK, but the actual transcript should be ONE page to make life easy for the adcoms. Since that’s what they told me, I took them at their word.