Because of him, the Roaring 20s was roaring. He was a true conservative and had such a limited government that it infuriated the liberals. Public education wont even come close to teaching children about this great president, for they(NFTA and NEA) wouldn't want American Citizens to be self reliant.
Calvin Coolidge: Best President Ever
Because he was an awful president, who didn't pay attention to how the crooks on Wall Street were about to run the economy over the cliff. SO his unregulated banks essentially lost everyone's money and caused a world-wide Depression.
There's a reason there are no Aircraft Carriers or anything of note named after Calvin Coolidge.
Or why after the economy crashed under Hoover (who was left holding the bag), the GOP didn't get back into the White HOuse for 20 years and even then, only after Ike admitted, "Yeah, Coolidge and Hoover really fucked it up, let's not do that again."
ON that segue, the best GOP President of the last century was - Dwight D. Eisenhower. He was the one who recognized that there was things government should do, while ratcheting back some of the places it overextended itself during WWII and Korea.
But you'll never see a Republican embracing Eisenhower. They'll embrace this imaginary version of Ronald Reagan who was a confused old man yelling at a wall.