A second generation immigrant is defined as “children born here [in the United States] to immigrant parents” (Wolf, 2002, 255).
A first generation college student is defined as “individuals whose parents did not obtain a bachelor’s degree” (Garriott, 2017, 436).
Furthermore...
"The more encompassing definition which is widely used in the US literature includes also parents with some college education, e.g. community college post-secondary certificates or an associate’s degree” (Spiegler, 2013, 319-320).