| 2008: | Arnie The Doughnut |
| | A Dog's Life: Autobiography of a Stray |
| 2007: | The Great Fuzz Frenzy |
| | Inkheart |
| 2006: | Skippyjon Jones |
| | Peter and the Starcatcher |
| 2005: | Tell Me a Scary Story...But Not TOO scary! |
| | Eragon |
| 2004: | Take Me Out of the Bathtub and Other Silly Dilly Songs |
| | Double Fudge |
| 2003: | Baloney, Henry P. |
| | The Bad Beginning |
| 2002: | David Goes to School |
| | Ghosts of the White House |
| 2001: | Hooray for Wodney Wat |
| | Bunnicula Strikes Again |
| 2000: | Psst! It's Me the Bogeyman |
| | Saving Shiloh |
| 1999: | Parts |
| | Adventures of Captain Underpants |
| 1998: | Ten Little Dinosaurs |
| | Shiloh Season |
| 1997: | Piggie Pie |
| | Wayside School Gets a Little Stranger |
| 1996: | Arthur's Chicken Pox |
| | Best School Year Ever |
| 1995: | Coyote Steals the Blanket |
| | Jeremy Thatcher, Dragon Hatcher |
| 1994: | Stinky Cheese Man and Other Fairly Stupid Tales |
| | Dinotopia |
| 1993: | The Dog Who Had Kittens |
| | Scary Stories 3: More Tales to Chill Your Bones |
| 1992: | Hershel & the Hanukkah Goblins |
| | Wayside School is Falling Down |
| 1991: | Talking Eggs |
| 1990: | Tacky the Penguin |
| 1989: | Magic Schoolbus at the Waterworks |
| 1988: | If You Give a Mouse a Cookie |
| 1987: | King Bidgood's in the Bathtub |
| 1986: | In a Dark, Dark Room and Other Scary Stories |
| 1985: | Miss Nelson is Back |
| 1984: | The Unicorn and the Lake |
| 1983: | Space Case |
| 1982: | Super Fudge |
| 1981: | Cross Country Cat |
| 1980: | Cloudy With a Chance of Meatballs |
| 1979: | The Great Green Turkey Creek Monster |
| 1978: | The Sweet Touch |
| 1977: | A Day No Pigs Would Die |
| 1976: | How Droofus the Dragon Lost His Head |
Colorado Children's Book Award