Under Part 1 of Gateway, it gives the option to ‘Unlink Form from (#) other schools’. Should we do this? Can schools see where else you’re applying?
I don’t think schools can see what other schools you apply to.
IIRC, that is a way for you to change the form before submitting it to another school, so you don’t need to submit the exact same Part I to each school. Maybe if you wanted to include a video link for school A but not for school B for some reason, etc.
I do not think other schools can see where you are applying. If you want to be extra-certain, email Gateway Support. They get back to you pretty quickly.
If you WANT to send all of the schools an identical Gateway profile, I would keep them linked. This will save work. As @mairlodi said, I think people unlink them if they want to send Info A to School A, and Info B to School B, etc.