I keep track of student requests we don't have as well and the students love it. I also use JLG because my district's budget is often frozen so it keeps books coming into the library throughout the year. I also look at Amazon best sellers for the popular books for students and then try to find nf books that align with teacher requests from publishers I trust like Capstone and Crabtree. Definitely not a perfect system but it's only my second year...
Kirsten Anderson
Deans Mill/West Broad Elementary Schools
Stonington, CT