Spy School is a kids novel about a kid who became a spy and the challanges he faces. This is my favorite series and has new books every year or so.

This novel is about a family who has adventures or mis-adventures. This is probably my second favorite book and I recommend it a lot.

This novel by Gordon Korman is about a mischeavous kid of a famous billionaire trying to get through the summer camp. Along the way he makes friends and has adventures . This is my favorite standalone book

Moon Base Alpha is a novel by Stuart Gibbs about a kid who lives in the moon and the mysteries he faces.