I was extremely lucky, that weekends course was postponed due to a bad snowstorm. The instructor offered to meet with me the following week and I had him one on one. His course took about 5 hrs. Then we went to a range and did some shooting. I qualified with my 9mm but got to shoot a few of his pistols also. My shooting improved tremendously just having that time one on one with him at the range. All my bad habits learned from shooting alone at home got busted.
I was so pleased that I signed my wife up for the next course coming up and a friend of hers joined as well. My wife got a 98 on the test all on her own I didn't meddle at all. She qualified with the 9mm also but I learned we will need to find her something more lady like, she can't rack the slide without a lot of effort.