Hey Paula t, can you let me know which school music catalogue? That is really cheap!
I have recorder groups separate to music lessons but also encourage the children to play them within music lessons when appropriate. I have a big group of B, A, G, players but write harmony parts for pieces so they can still join in. Recorders CAN sound nice sometimes, lol! I consider it a challenge to convince people that they can do!
Good luck with the Nurofen! :-)