Returning to the USA for final year of HS with very good ACT and SAT scores; trying to get a handle

I don’t think so. If husband’s name and SSN is on a joint return, he did in fact file, regardless of his income. Someone who filed a tax return would not complete a non-filer’s statement.

Edited to add: FAFSA instructions specifically say not to report under parent’s untaxed income “foreign income exclusion.”