In both cases, of course, the long answer involves numerous ifs and buts.. However, both Alina and Kathryn face the same fundamental problem: They have pursued graduate degrees that might not actually qualify them to teach anything, at least at a community college. Consider Alina's case.
Ivanka spent her first two college years at Georgetown University (her brother Eric's alma mater). In her junior year, however, she transferred to the Wharton School of Finance at the University of Pennsylvania. She graduated from Wharton in 2004 with a degree in economics. It's something of a family tradition -- her father often brags about his Wharton degree, and Ivanka's older brother Donald Jr. and younger sister Tiffany went to college there, too.
Nixon was educated in public schools in Yorba Linda and Whittier, where the family moved when he was nine. After high school, Nixon enrolled at Whittier College, a Quaker institution, where he was a successful student politician, becoming president of the student body. After Whittier, Nixon attended Duke University Law School, where he graduated third of the 44 members of the class of 1937.