Luckily for me (and you!), I'm a member of a fabulous group of writers who also happen to be parents. When one parent recently asked for book suggestions for her elementary school-aged son, the suggestions were fast and furious -- and so good that I'm passing them on to you. So good, in fact, that I'm only going to share their series recommendations with you today. We'll talk authors another time.
Here, then, a list of boy-approved book series:
Lemony Snicket and a Series of Unfortunate Events
A to Z Mysteries
Little House on the Prairie (start with Farmer Boy if you think your boys will object to the female protagonists)
The 39 Clues
Star Wars chapter books
Percy Jackson and the Olympians
The Secrets of Droon
If You Lived... historical series
Time Warp Trio
The Mysterious Benedict Society
Warriors or Seekers book series
The Keys to the Kingdom
Peter and the Starcatchers
Have any series you'd like to add to the list?