Barack Obama started school at St. Francis Roman Catholic School in Indonesia. He continued his education at Besuki Public School in Indonesia. Moving to Hawaii, he enrolled in Punahou School, a private academy. After graduating, he enrolled first in Occidental College, a private school in California. He transferred to Columbia University on the east coast, and after obtaining his bachelor's degree, he studied at Harvard Law School. He never attended an American public school, and he also chose to keep his daughters out of public schools.
George W. Bush attended public schools, as did Bill Clinton, Ronald Reagan, Jimmy Carter, Gerald Ford, Richard Nixon, Lyndon Johnson, Dwight Eisenhower and Harry S. Truman - an interesting mixture of liberal and conservative, Democrat and Republican.
The only other modern U.S. presidents to entirely avoid public schools were John F. Kennedy and George H.W. Bush.
