I’m glad to see @maya54 give an alternate view. I also went to a huge college and my sibling’s presence was very strongly felt. I think it’s likely that people are more likely to post to this thread with positive or neutral anecdotes, and that those who had a less positive experience are perhaps not as likely to be open about it.
Didn’t read the whole thread but have some experience in our family with nephews. I think it is a very bad idea. Going to college is about studying and finding out who you are and what you want to do with your life for work. Following in someone else’s footsteps isn’t the best first step to take.
Both of mine, 1 year apart in school, went to the same college (and hey, the same high school.) Sure, they had friends in common, but also not. Different majors, different side interests, though the same college comm service program.
No big deal. They liked that we could visit them together (3 hours away.) I liked that we were dealing with the same annual schedules, same admins and policies, etc.
D2 was always D1’s younger sister, but they each recognize and appreciate the differences. Younger sibs will always be that.
And OP’s sister would only be on campus 2 same years.
I went to the same big university as my older brother (2 years apart), and it didn’t really create much in the way of problems. We had different majors and different friends. It was easy to have my own life separate from his if I wanted plus, he was handy to have nearby if I needed him or his help for some reason.
Also, I had a lot more fun during freshman orientation week because he told me which events were a waste of time and could be skipped (most of them) and which actually had any value (a few). So unless there is a lot of arguing or drama between you and your sister, there is really not that much of a downside to having her on campus.