I'm going to leave my friend's name out of a school project
Why would you leave his name off the project?
Because I don't want to share the credit to my friends
I understand wanting to be successful, but it's wrong not to share credit with those that deserve it. If they don't get credit for their work they will get a bad grade for the teacher thinking they didn't do the the work.
I'm mature and I don't need to focus on others at all times.
I'm just saying that not allowing someone to get credit for their work is wrong. You should do the right thing and leave his name on there.