Prestigious fellowships and scholarship, like the Rhodes or Fulbright Scholarships, are available for graduate school. There are also scholarships available for undergraduate education. Not only are students expected to have high GPA's but also an impressive portfolio of leadership experiences, among other things. The key to winning such a scholarship is:
Creighton University's resource page for National and International Scholarships and Fellowships: https://www.creighton.edu/soar/
Additional university or program-specific scholarships or grants may be available. The best resource for the availability of the additional scholarships is to contact the university and/or program of interest. For Creighton University programs please see the information provided through Creighton University's Admissions Information as well as the Office of Financial Aid.
You might also research scholarships through professional honor societies and professional associations in your discipline.