If a family is going to be in an out of state area where they really want to see the school tour - the LSU was a walking tour and it wasn’t limited on the number for their ‘tour’. They wanted to have a HS student as part of your group to schedule and the student received a LSU packet. Nephew was there in PhD program, so we used a spring break to go visit (their spring break was different than our kids’ school, so we saw ‘regular campus’ time, and in the spring with the campus coated with yellow pollen from the trees).
I do think if the family is familiar with colleges and knows their student well, that may cut back on the number and scope of school visits. However there are so many students that cast a wide net, and also do not know what they want to study - or the student thinks they want to major in XXX and they list out what they think are the 8/9 schools that would be great for them in this major (including many reach or distant schools). Some parents allow their oldest student to explore a lot of options and plan vacations etc around seeing schools. However some could limit this if they understood scholarships, their student’s placement as a ‘high stat’ student or not and what it means in various schools, and what it will cost for them with their student at that particular school (the need to look at NPC for each school and looking at that school’s scholarships and the type of students that receive school scholarships at that institution). Parents or the student has to understand where the student will be a match for school, program, finances, etc.
We visited a number of in state public and private schools when DD1 was in 9th grade - school days off, summer, spring break, fall break - the breaks when college in session except for one with summer visit. Good thing, as I had stage III cancer at age 52/53 when DD1 started 10th grade, and H took DDs and their two friends to a day trip college visit that was scheduled while I had my first chem session (Veteran’s Day, where the kids’ school was off but college had classes and tours).
You never know when family issues are going to come up. Some students are busier during HS junior and senior years - plus those are important years to ferret out career direction and explore all their HS has to offer them, plus you want the wheels going in their brain on sorting out what they like/don’t like and so they can also take advantage of summer career directed, leadership, other programs and think about classes and careers. Also where they can be successful in college and parents being open about affordability. Also ACT/SAT testing and preparation for potential scholarship during junior/senior year. If not doing their best at freshman/sophomore HS level, they will get a wake up call on what school options they have. DD got the needed ACT test on the last one her school would take, and planned to have the time during first semester senior year for the proper preparation - absolutely paid off in spades.
Many students end up visiting rushed at the end of senior year when they are choosing between schools where they had been accepted. This happened with my friend’s DD - she was high stat and ended up going to Coopers Union after being accepted to 8 of 9 schools (MIT sent sort of an apology letter that the quality of international student applicants were unusually high that year) - this student’s dad was a MIT alum.
We didn’t need to do any visits just with DD2 (2 years younger than DD1) - she knew where she wanted to go, and was participating with every honors activity with that state flagship. Did ‘make’ her go to engineering day at another school, and after the day, she said she would not attend there no matter what! Just wanted her to compare the schools and see what they had. We had clear decisions by DDs, and the school they wanted was a great fit in all ways.