1948 Presidential Rankings From Harvard University

Who would you lower in rank?

I think current Americans would demote Woodrow Wilson for his racism and Andrew Jackson for his forcing Native Americans to endure the Trail of Tears.

I would like to know the basis of the rankings used by Harvard Historians.
Current Americans would put Obama at the top, Just as he got a Nobel Peace Prize for doing nothing but getting elected.
Two of my best Presidents would be Fillmore and Coolidge. Fillmore for expanding the U.S. much like Jefferson did and Coolidge for his handling of the economy in a territorially defined U.S.

President Obama's library costs $30 for admission and you must have photo ID.

Your guides are unpaid volunteers but the board members earn 700K a year.

The Democrats are quietly dropping Biden down the memory hole. How long before they start attacking Barack Obama for his unapproved wars in the Middle East?

I'd drop FDR down a few notches too. He might not have started the notion that providing for the general welfare of the Union included providing for the individual welfare of everyone, but he most certainly promoted the idea.