Yup, all the good ones never did graduate.
And given the utter worthlessness of most college degrees nowadays (especially the ones from you know where), one would think that a degree introduces strong suspicions about the intellect of the possessor. (STEM excluded, of course.)
George W Bush - Yale (Harvard post-grad)
George H W Bush - Yale
Ronald Reagan - Eureka College
Gerald Ford - University of Michigan (Yale post-grad)
Richard Nixon - Whittier College (Duke post-grad)
Dwight Eisenhower - USMA (West Point)
Herbert Hoover - Stanford
Calvin Coolidge - Amherst
Warren Harding - Ohio Central College
William Taft - Yale
Theodore Roosevelt - Harvard
Probably not complete, especially as regards post-grad work, but this covers the last century of Republican presidents and their colleges. You’re sure you can’t find even one president on this list that you would consider a good president? I know I can.