Other than someplace like BYU, you won’t find that kind of policy enforced anywhere. You can debate the merits of this approach, but most colleges have decided to NOT heavily discipline underage drinking. It just drives it underground, and does not stop it, and makes it less likely that students will call for help if someone has had too much to drink. Both of my kids’ colleges have had that type of policy. One is a “real” adult now, and did not drink much in college. She has maybe 1-2 glasses of wine a week as an adult. The other is a college senior doesn’t like the taste and doesn’t touch the stuff (going to grad school visits now, and finding it annoying that the grad students keep wanting to take them to bars).
Your kid is likely to find it at any school if she wants it. The school administration is not going to be strict with them unless you pick a school of a very specific type.