In the popular memory (fed by the media, and also, sadly by many who lived through FDR's administration) he is considered a good president. Historical fact speaks a bit differently.
The Great Depression was more than an economic crisis, it was a psychological blow to the US. Although Hoover (a much maligned individual, and wrongly so) had attempted some Keynesian efforts (something many history classes, not mine, though, ignore), what Hoover did was too little, too late. Hoover rightly feared "creeping socialism" and never went full bore as Roosevelt did with the New Deal.
The New Deal was as much about psychology as it was about trying to get people back to work. Programs such as the PWA, the CCC and the WPA had an impact, but other programs such as the NRA (National Recovery Administration) were both worthless and unconstitutional. Roosevelt's court packing scheme (which led to his losing states in the 1940 elections, as well as his unprecedented run for a third term) was indicative of a lust for power which is singularly Democrat.
Now begs the question, "Would Wendell Wilkie have been as good a wartime president as Roosevelt?" Who knows? Roosevelt was at least smart enough to leave the conduct of the War to his generals and admirals (thank God for George Marshall, Hap Arnold, Douglas MacArthur and Curtis LeMay...among others), and not micromanage the War as LBJ so disastrously did 20 years later. Roosevelt's foreign policy was disgustingly pro-Soviet, and grew more so during the war years, primarily at the prodding of his VP, Henry Wallace (who himself ran as a basically Communist candidate in 1948). Roosevelt also made a major blunder in not committing adequate resources to the Pacific Theater during the War as part of the "Hitler First" strategy. The fact that the Japanese were whupped by American forces using inadequate equipment is testament as much to the skill and tenacity of the American fighting man as it is to the incompetance of Japanese military and political leadership.
Basically, was FDR a good president can be answered in this way: Yes and no. Domestically he did some good, but at a terrible cost to our economic and personal liberties. In foreign policy, he made good choices in who commanded the troops in war, but his diplomatic decisions paved the way for nearly fifty years of Cold War against the Soviets.
Ironically, it took a former Roosevelt Democrat to end Roosevelt's Cold War.
Thank you, Ronald Reagan.
Oh, but FDR DID try to micromanage WW2.
If you can, you should see if you can listen to any of those phony-baloney "fireside chats" that came over the radio at us during that time.
FDR sometimes spent the entire broadcast whining about being up all night worrying about how many troops he sent hither and how many troops he sent yon.
He and his administration officials brought socialism in in a big way, which really appealed to the "have-nots." He introduced the concept that people didn't have to work because "the gubmint" would tke care of them. NEW DEAL!