"We offer a $500 scholarship if you're female, a veteran of the U.S. Military, or from an ethnic minority group underrepresented in the software engineering field (African American, Chicano/Latino, Native American, Pacific Islander)."
Isn't charging someone more because of their race or sex is illegal? That's what a "scholarship" for only certain groups amounts to.
edit: Your victory will insure that underrepresented groups and veterans get the same treatment as everyone else, and depending on the jurisdiction, it could get you $2500 or more if you were discriminated against. Some people go from club to club trying to find 'ladies' nights' and suing. They always win.
Or you could not do that, and account for it by the fact that being an underrepresented group or a veteran isn't a net benefit in society.