Might be able to buy 30 consumable workbooks for our library chess club. Looking for something that could maybe used over a few years where players get small rewards for their efforts. Suggestions? Experience doing this?

Probably get better responses in this forum.  I do know there is a Dutch series of graded  courses that have workbooks and are highly rated though (Steppenmethode or somesuch).

https://www.chess.com/forum/category/scholastic-chess

https://www.stappenmethode.nl/en/

This is becoming harder to find new, but would probably be ideal for your needs.  Amazon does have a few new copies and quite a few used however...

Even better is the author's website.  On sale for $12.80.  Maybe less with a volume discount...

https://www.chessforstudents.com/

Maybe buy tactic book, endgame , opening and a general book for starters. And then focus on tactics , endgame and opening principles first. That would last and be effective too. Good luck

Thanks everyone for all the comments and suggestions. I will take a look at the book references and the scholastic forum.