It was an observation, but hey,if you want hostility: your comment was ageist BS. Read the rest of my response to see why.
Back on topic. In my years at University, undergrad and grad school, I noticed no difference in grading between male or female profs. Some profs are more irritable than others, but I never noticed it being related to sex. My father is a Prof. He hates the Part Timers, as in his opinion, they just aren't as dedicated to the job. He always tells my kids to get a full time teacher, if at all possible, for a better class.
Having done undergrad in a department that is very small, so even the undergrads personally know most of the profs, I'd say there is some truth to that when compared to a good prof, but it's often not a fair assessment when compared to the whole pool of full time profs. The part-timers I've known were highly dedicated to their jobs, but had to have multiple part time gigs (often commuting between colleges, sleeping in their offices when schedule demands), because adjunct positions don't pay nearly as much as even a temporary full time position. One of the best profs I had was someone who had spent many years doing just that -- teaching in various part time gigs within a 100 mile radius of home -- for years before getting hired at my undergrad school. He regularly won teaching awards, but couldn't get hired as a full time because some of his research was unpopular -- not poorly done or anything like that, but people just didn't like it. Also, I've known some really bad full-time, tenured profs... Like the one old man who would hit on any female student who was a brunette with C cup or bigger boobs. Or the one I graded for last fall (I just finished my first year of grad school) who was pretty much incoherent -- he's supposedly brilliant, but so brilliant that he's crossed over into crazy... I've honestly had far more problems with older, tenured, close to retirement profs who are either old-school (think it's fine to date undergrads, for example) or are just tired of it, want to be at home with the grandkids and are just getting thru until they can get a good retirement package. I'd tell your kids to look online for ratings of profs -- ignore the numbers and read the comments that people leave. Judging them by gender, hiring status, age, or any other such measure is not really going to improve the quality of your education.
It really wasn't my opinion, it was my dad's, who is a Prof himself, and headed a department for many years. The University I went to didn't have many part timers at all.
My response to the original topic poster was not hostile. I took some crap from a male teacher in community college that really had me upset. I think it's awful shitty that people abuse the positions they're in- in general.