Far too many of my students rely on writing note names/finger numbers beneath EVERY single note. As soon as I hand them a new piece of music they frantically begin writing in note names trying desperately to get all the way through the page before we start playing.
In order to help increase their note-reading skills we started doing a sight reading drill daily. I project the example up on the screen to prevent them from writing in note names (thankfully I'm in a classroom where my projector is mounted high enough on the wall that everyone in the ensemble can see, even while I'm standing on the podium).
Each PDF below has 25 sight reading examples for you to use. Let me know how it goes in your classroom!