I've got an axe to grind with everyone who automatically assumes that going thru flight school with a family was harder. Flight school is hard enough without folks assuming you'll fail because the wifey is at home. Making "generalizations" has never worked- all of the "isms" are based on generalizations...and look where those got us...Not to mention that they are generally not true.
Anecdotally-I saw as many single or not married folks get smoked on a flight or bone up in the squadron spaces or depart the program as I did married ones. I didn't hook a single flight or have any issues during my stay at the school house...Are there stats that evaluate the performance of studs with families who finish the program?
I've never seen any actual numbers that proved being married, prior, kids, etc actually meant you would have a harder time with flight school...Just the student control inbriefs where I had to raise my hand to say I was married and had a kid and then be told that I would probably attrite because the statistics said so.