My graduate schools were all private (Goddard College, MA; Union Theological Seminary, MDiv; Episcopal Divinity School, DMin), but my success in graduate school was made possible by my public school foundation:
College Hill Elementary School (1st grade)
Liberty-Eylau ISD (2nd - 12th grades)
Texarkana College (public community college)
Henderson State University (BA)
Additionally, my parents were graduated from Arkansas High School (my dad was an alum of both Henderson State Teachers College, later known as HSU, [BME] and Louisiana Tech University [MAE])...all public schools.
My grandmother was graduated from Wickes High School, Magnolia A&M College (later known as Southern AR Univ [Teaching credential]), and Arkansas State Teachers College (later known as University of Central Arkansas [BSE])...all public schools.
My dad taught public school music for 7 years, my grandmother was a public school elementary teacher for 36 years, and her sister, my great-aunt was also a public school elementary and special education teacher.
My husband's MDiv and DMin are both from private seminaries, but his K-12 years were also in public schools.
Both of my brothers and all of their children went to public schools (one brother went to private school for a few years but graduated from public high school).
My entire family benefited from public education.
Additionally, my education has been enhanced by PBS/NPR (just saying).
None of this may matter to the billionaire class oligarchy in charge right now, but it has meant the world to me.