Anonymous wrote:AP is generally a capstone because you take the AP exam.
By curriculum, AP is 5. You've done the grammar and core vocab and whatnot by the end of 4.
After AP, people who want to continue improving go to 6 and maybe 7. It's not like Algebra, Geometry, Calculus with leveled content; you just get closer to fluent by practicing more.
5 is for (many) people who don't feel ready for AP after 4.
Is 5 really AP at most schools? At our school people seem to take it junior year who have already had 5 years of language, so for them it wouod be 6.