If you liked On My Honor by Bauer, you may like ...

anything by Andrew Clements

Toys Go Out

Doing Time Online

Holes by Louis Sachar

When Zachary Beaver Came to Town by Kimberly Willis Holt

Colder Than Ice by David Patneaude

Randall's Wall

The first book in the Ranger's Apprentice is great about making choices and dealing with friends, and is hugely popular.

Fourth Grade Rats by Jerry Spinelli

A Taste of Blackberries by Doris Buchanan Smith

Inch & Miles: The Journey to Success by John Wooden, et al