I use the Nature Detectives website (naturedetectives.org.uk) for many of the handouts used in our L.O.S. Young Birders' Club. They're free to download and I laminate them after printing so they can be reused many times. You could get the school to print them for you but they do need to be done in colour. The Bird ID dial activity is quite good and we also make up quizzes to go with photos on the ID sheets. Have look at the website, there are lots of other seasonal resources there too, which can be useful when there aren't so many birds about.
You could also have a look at our Young Birders' Club website, which is just getting going again after a bit of a lull. We visit primary schools, Cubs and Beavers (not done a Brownies group yet) and you can read some of our reports about these visits on the website: www.losybc.blogspot.com.
I will soon be doing a talk at the primary school near where I work.
I am looking for fairly basic identification handouts of urban and garden birds. If anyone has anything they deem might be suitable for this and are willing to donate it, can they please pm me.