| TITLE | AUTHOR | BL | POINTS |
| Ocean Food Webs | Paul Fleisher | 3.50 | 0.50 |
| Oceans (Nature Books) | Kristin Ward | 1.50 | 0.50 |
| Odd Velvet | Mary E. Whitcomb | 4.10 | 0.50 |
| Odysseus in the Serpent Maze | Yolen/Harris | 5.00 | 7.00 |
| Off and Running | Gary Soto | 4.60 | 3.00 |
| Officer Buckle and Gloria | Peggy Rathmann | 3.40 | 0.50 |
| Oh, Brother | Johnniece Wilson | 4.20 | 4.00 |
| Oh, the Thinks You Can Think! | Dr. Seuss | 1.80 | 0.50 |
| Ojibwe (Native American People), The | Susan Stan | 6.70 | 1.00 |
| Old Black Fly | Jim Aylesworth | 1.40 | 0.50 |
| Old Crump: The True Story of a Trip West | Laurie Lawlor | 2.80 | 0.50 |
| Old Mother West Wind | Thornton Burgess | 4.00 | 2.00 |
| Old Woman Who Named Things, The | Cynthia Rylant | 3.60 | 0.50 |
| Old Yeller | Fred Gipson | 5.80 | 6.00 |
| Olive's Ocean | Kevin Henkes | 4.70 | 4.00 |
| Oliver | Syd Hoff | 1.80 | 0.50 |
| Oliver Dibbs and the Dinosaur Cause | Barbara Steiner | 5.00 | 5.00 |
| Olivia | Ian Falconer | 2.00 | 0.50 |
| Olivia...and the Missing Toy | Ian Falconer | 2.00 | 0.50 |
| Olivia Saves the Circus | Ian Falconer | 1.90 | 0.50 |
| On Christmas Eve | Margaret Wise Brown | 3.60 | 0.50 |
| On My Honor | Marion Dane Bauer | 5.30 | 2.00 |
| On the Banks of Plum Creek | Laura Ingalls Wilder | 4.70 | 9.00 |
| Once There Was a Tree | Natalia Romanova | 3.90 | 0.50 |
| One Day at HorrorLand | R.L. Stine | 3.70 | 3.00 |
| One Day in the Alpine Tundra | Jean Craighead George | 5.50 | 1.00 |
| One Day in the Desert | Jean Craighead George | 5.50 | 1.00 |
| One Day in the Prairie | Jean Craighead George | 5.00 | 1.00 |
| One Day in the Tropical Rain Forest | Jean Craighead George | 5.20 | 1.00 |
| One Duck Stuck | Phyllis Root | 1.40 | 0.50 |
| One Fine Day | Nonny Hogrogian | 3.70 | 0.50 |
| One Fish, Two Fish, Red Fish, Blue Fish | Dr. Seuss | 1.40 | 0.50 |
| One Hundred Hungry Ants | Elinor J. Pinczes | 2.20 | 0.50 |
| One in the Middle Is a Green Kangaroo, The | Judy Blume | 1.50 | 0.50 |
| Onion John | Joseph Krumgold | 4.70 | 9.00 |
| Only One Woof | James Herriot | 3.50 | 1.00 |
| Oops! | Colin McNaughton | 2.70 | 0.50 |
| Opossums (Animals That Live in the Forest) | JoAnn Early Macken | 1.50 | 0.50 |
| Oprah Winfrey (Book Report Biographies) | Philip Brooks | 7.10 | 3.00 |
| Ordinary Princess, The | M.M. Kaye | 6.20 | 4.00 |
| Orlando Bloom | Kay Barnham | 4.70 | 1.00 |
| Orville: A Dog Story | Haven Kimmel | 4.70 | 0.50 |
| Oscar, Cat-About-Town | James Herriot | 3.90 | 1.00 |
| Oscar de la Hoya (Reading Power) | Rob Kirkpatrick | 1.70 | 0.50 |
| Ostriches | William John Ripple | 1.80 | 0.50 |
| Other Side, The | Jacqueline Woodson | 2.70 | 0.50 |
| Otherwise Known as Sheila the Great | Judy Blume | 3.50 | 4.00 |
| Ottawa (Native American People), The | McCall/Howes | 6.90 | 1.00 |
| Our Granny | Margaret Wild | 3.10 | 0.50 |
| Our Sixth-Grade Sugar Babies | Eve Bunting | 4.70 | 4.00 |
| Out From This Place | Joyce Hansen | 5.30 | 5.00 |
| Outcast of Redwall | Brian Jacques | 6.30 | 15.00 |
| Outcasts of 19 Schuyler Place, The | E.L. Konigsburg | 5.50 | 9.00 |
| Over Sea, Under Stone | Susan Cooper | 7.00 | 13.00 |
| Owl and the Pussycat, The | Edward Lear | 2.70 | 0.50 |
| Owl Moon | Jane Yolen | 2.90 | 0.50 |
| Owls (Animals That Live in the Forest) | JoAnn Early Macken | 1.70 | 0.50 |
| Ox-Cart Man | Donald Hall | 4.50 | 0.50 |