Importance of "most rigorous" designation?

For reasons too long and boring to go into, it recently became a question as to whether the GC’s at my sophomore son’s high school will continue to check most rigorous for a kid who “only” takes 3 AP’s junior year and then takes 4 or 5 senior year, as has been their past practice. Note that of the 5 basic core courses, 3 are available as AP’s junior year. Taking more than 3 AP’s is possible only by adding AP electives.

The top students at the school generally end up a notch below HYPS. Cornell, Dartmouth and Penn are usually decently represented.

The recently retired head of guidance says not to worry about whether or not the GC’s will check most rigorous because the AO’s ignore it anyway. She says this is because there are no uniform standards across the country. At some some schools, only the few kids taking the absolutely most difficult schedule available will get it checked, while at other schools, every kid who took a couple of honors and an AP will get it checked. She says the AO’s just look what’s offered by the school and what actual classes an applicant took and make a judgment from there. I have to say, that this makes sense to me.

Yet, on CC, the gospel seems to be that most rigorous is important for the top schools.

Is this just one of those ideas that take on a life of their own? Or is there good reason to believe the former head of guidance is mistaken? Can anyone with real insight into the admissions process, preferably a current or recent admissions officer from a top school or a college counselor or GC who has dealt with lots of colleges and lots of applicants, shed any light?

I visited Cornell for a tour, and in the Q&A session, a woman asked a similar question (she asked if it’s better for her son to take a lot of AP’s or take non-AP’s that relate more to what the son intends to do in college), and the admissions officer said the latter. She said it was important for students to follow what they like, even if they have to sacrifice an AP or two. It won’t reflect badly. For example, in my school AP Enviro is seen as the “easy” AP, so many students take it to look good (esp those who have zero interest in enviro). However, the Cornell rep suggested rather to take classes that relate to your interests. Hope this answered ur question!

Even if what the GC said is somewhat true, you would rather have “most rigorous” checked off than not. An AO may not pay that much attention to a “most rigorous” being checked off but when it’s not, they have to figure out why not in my opinion.