Can all colleges see a recommendation letter submitted through the Common App?

I am a bit confused. So one of my teachers is preparing a recommendation letter for me. I already sent them the request on the common app. When they submit it, will it only be for a certain college or can every college that use the common app be able to see my recommendation letter? If only one college can see it, then I’ll have to ask my teacher to make a copy!

Good question!
I wanted to ask this question too.

Adding another question:
If I apply around 28 colleges, I can do 20 colleges via common app and link the recommendation letter.

For the 8 colleges, Can I link the common app recommendation letter?
or do I need to ask the teacher to forward the recommendation letter to those colleges?

Thanks

The teacher will post the letter once, and your school counselor will make it available to all the schools you are applying to. The teacher doesn’t make any paper copies.

If you are applying to more than 20 schools, ask your counselor how to handle the rec letters.