I just wrote the article on the minimum dropout age.

I’ve also contemplated upon the age of graduation from high school as opposed to the minimum age of dropout (without parental consent) from high school.

If states such as South Dakota and New Hampshire have raised the minimum dropout age to 18 (primarily for socioeconomic reasons), then doesn’t it make sense to raise the minimum graduation age to higher ages or grades?

I think the graduation age should be raised to at least 21 and the curriculum of community colleges integrated into the secondary education institution. I mean, it’s not like community colleges are not already perceived as the "13th grade" (for negative reasons, I perceive); most of the education that is provided by community and technical colleges should have been taught on a mandatory basis as such skills are now seen as barely bedrock-level for consideration by employers in multiple sectors. Plus, every century is signified by the raising of expectations by the most attractive and important employers, which is why these states have raised the minimum dropout age to 16 in the early 1900s, 18 in the early 2000s, etc.

EDIT: Oh, it seems that there’s already a movement that’s aiming in this direction: the K-16 movement.