Just a coincidence? That's absurd.
It's a system that causes this pattern to repeat.
THIS chart shows what the follow-the-schedule method wants.
NOT what school board members want.
NOT what superintendents want.
-- no performance data available --Bakersfield City
Students would perform better the more years in school IF the follow-the-schedule method wanted that.
But that's not what it "wants"...and it's not a coincidence this pattern repeats (repeatedly).