As has been mentioned numerous times, consistency and familiarity of a few films, developers and papers is key. Keeping things simple also helps tremendously. When I was in high school some thirty five years ago and was photography editor of the high school year book and newspaper, I almost exclusively used tri-x and D76 for film and devloper and Kodabromide, grades 2 and 3 and Dektol for paper and paper developer. I exposed for a middle gray tone and developed the film exactly the same every time. Because I was using graded paper, contrast was not an issue. Most print exposures were very close to the same time from picture to picture and from roll to roll. I exposed prints for the entire roll and then developed them three or for prints at a time. The great majority of the prints would be acceptable. Some of the remaining were not worth fine tuning. Some might be corrected with one or two adjustments with exposure or changing grade of paper. And, a few that seemed outstanding or important might require a half a dozen or so prints before I was satisfied or gave up.
In this day and age, variable contrast paper seems to be the rule and I find that I spend a lot more time juggling print exposure and contrast filtration than I ever had to with graded paper. The first print of the roll is always the most difficult, but once I get in the groove, the later prints go a lot faster.