<p>Reading further on the US Dept. of Education website, this gets simpler and simpler.
Graduates of traditional high schools self-certify that they have or will have a high school diploma through an answer on the FAFSA. “However, because the FAFSA does not include a question regarding home-school completion, institutions may accept such self-certification in institutional application documents, in letters from the students, or in some other appropriate record”.
That’s it.
For those poor souls (not home schoolers) who actually have to take a test, they are pretty rudimentary. One that qualifies is the Wonderlick Test, a 12 minute IQ test.</p>