ORT: Oxford Reading Tree
| Series | Title | YL | Words | |
| ORT1 | First Words | Who Is it? | 0.1 | 16 |
| ORT1 | First Words | Floppy Floppy | 0.1 | 10 |
| ORT1 | First Words | Six in a Bed | 0.1 | 19 |
| ORT1 | First Words | A Good Trick | 0.1 | 11 |
| ORT1 | First Words | Fun at the Beach | 0.1 | 27 |
| ORT1 | First Words | The Pancake | 0.1 | 16 |
| ORT1 | More First Words A | Is It? | 0.1 | 25 |
| ORT1 | More First Words A | Get On | 0.1 | 22 |
| ORT1 | More First Words A | Floppy Did This | 0.1 | 23 |
| ORT1 | More First Words A | Get Dad | 0.1 | 20 |
| ORT1 | More First Words A | Up You Go | 0.1 | 23 |
| ORT1 | More First Words A | I See | 0.1 | 35 |
| ORT1+ | First Sentences | Hide and Seek | 0.1 | 36 |
| ORT1+ | First Sentences | Reds and Blues | 0.1 | 30 |
| ORT1+ | First Sentences | Big Feet | 0.1 | 39 |
| ORT1+ | First Sentences | Look at Me | 0.1 | 33 |
| ORT1+ | First Sentences | Go Away, Floppy | 0.1 | 24 |
| ORT1+ | First Sentences | Kipperfs Diary | 0.1 | 45 |
| ORT1+ | More First Sentences A | Top Dog | 0.1 | 39 |
| ORT1+ | More First Sentences A | What Dogs Like | 0.1 | 31 |
| ORT1+ | More First Sentences A | Go Away, Cat | 0.1 | 30 |
| ORT1+ | More First Sentences A | Go On, Mum! | 0.1 | 41 |
| ORT1+ | More First Sentences A | Look After Me | 0.1 | 38 |
| ORT1+ | More First Sentences A | Presents for Dad | 0.1 | 45 |
| ORT1+ | More First Sentences B | One Wheel | 0.1 | 53 |
| ORT1+ | More First Sentences B | Chipfs Robot | 0.1 | 65 |
| ORT1+ | More First Sentences B | The Sandcastle | 0.1 | 55 |
| ORT1+ | More First Sentences B | Floppyfs Bone | 0.1 | 57 |
| ORT1+ | More First Sentences B | The Box of Treasure | 0.1 | 55 |
| ORT1+ | More First Sentences B | Hook a Duck | 0.1 | 55 |
| ORT1+ | More First Sentences C | The Ice Cream | 0.1 | 31 |
| ORT1+ | More First Sentences C | Can You See Me? | 0.1 | 39 |
| ORT1+ | More First Sentences C | Good Dog | 0.1 | 43 |
| ORT1+ | More First Sentences C | What a Din! | 0.1 | 34 |
| ORT1+ | More First Sentences C | See Me Skip | 0.1 | 42 |
| ORT1+ | More First Sentences C | The Mud Pie | 0.1 | 28 |
| ORT1+ | Patterned Stories | Push! | 0.1 | 21 |
| ORT1+ | Patterned Stories | At the Park | 0.1 | 29 |
| ORT1+ | Patterned Stories | Fancy Dress | 0.1 | 23 |
| ORT1+ | Patterned Stories | Good Old Mum | 0.1 | 34 |
| ORT1+ | Patterned Stories | The Headache | 0.1 | 20 |
| ORT1+ | Patterned Stories | The Pet Shop | 0.1 | 32 |
| ORT1+ | More Patterned Stories | Shopping | 0.1 | 35 |
| ORT1+ | More Patterned Stories | What a Mess! | 0.1 | 25 |
| ORT1+ | More Patterned Stories | Making Faces | 0.1 | 15 |
| ORT1+ | More Patterned Stories | Goal! | 0.1 | 24 |
| ORT1+ | More Patterned Stories | The Journey | 0.1 | 23 |
| ORT1+ | More Patterned Stories | Who Did That? | 0.1 | 36 |
| ORT2 | Stories | New Trainers | 0.2 | 34 |
| ORT2 | Stories | What a Bad Dog! | 0.2 | 51 |
| ORT2 | Stories | The Dream | 0.2 | 54 |
| ORT2 | Stories | The Go-kart | 0.2 | 47 |
| ORT2 | Stories | A New Dog | 0.2 | 52 |
| ORT2 | Stories | The Toysf Party | 0.2 | 48 |
| ORT2 | More Stories A | The Water Fight | 0.2 | 64 |
| ORT2 | More Stories A | The Baby-sitter | 0.2 | 69 |
| ORT2 | More Stories A | Floppyfs Bath | 0.2 | 55 |
| ORT2 | More Stories A | Kipperfs Balloon | 0.2 | 61 |
| ORT2 | More Stories A | Kipperfs Birthday | 0.2 | 64 |
| ORT2 | More Stories A | Spots! | 0.2 | 53 |
| ORT2 | More Stories B | The Foggy Day | 0.2 | 67 |
| ORT2 | More Stories B | The Wobbly Tooth | 0.2 | 70 |
| ORT2 | More Stories B | Bifffs Aeroplane | 0.2 | 63 |
| ORT2 | More Stories B | The Chase | 0.2 | 81 |
| ORT2 | More Stories B | Floppy the Hero | 0.2 | 74 |
| ORT2 | More Stories B | Kipperfs Laces | 0.2 | 63 |
| ORT2 | First Sentences | Put It Back | 0.2 | 93 |
| ORT2 | First Sentences | Poor Floppy | 0.2 | 77 |
| ORT2 | First Sentences | The Big Egg | 0.2 | 69 |
| ORT2 | First Sentences | A Present for Mum | 0.2 | 77 |
| ORT2 | First Sentences | The Hole in the Sand | 0.2 | 79 |
| ORT2 | First Sentences | In a Bit | 0.2 | 83 |
| ORT2 | Patterned Stories | Itfs the Weather | 0.2 | 58 |
| ORT2 | Patterned Stories | Creepy-crawly! | 0.2 | 73 |
| ORT2 | Patterned Stories | Monkey Tricks | 0.2 | 69 |
| ORT2 | Patterned Stories | Naughty Children | 0.2 | 73 |
| ORT2 | Patterned Stories | Hey Presto! | 0.2 | 86 |
| ORT2 | Patterned Stories | A Sinking Feeling | 0.2 | 57 |
| ORT2 | More Patterned Stories A | The Little Dragon | 0.2 | 89 |
| ORT2 | More Patterned Stories A | The Lost Puppy | 0.2 | 65 |
| ORT2 | More Patterned Stories A | New Trees | 0.2 | 87 |
| ORT2 | More Patterned Stories A | The Band | 0.2 | 66 |
| ORT2 | More Patterned Stories A | Up and Down | 0.2 | 55 |
| ORT2 | More Patterned Stories A | What Is It? | 0.2 | 66 |
| ORT3 | Stories | By the Stream | 0.3 | 71 |
| ORT3 | Stories | A Cat in the Tree | 0.3 | 79 |
| ORT3 | Stories | The Egg Hunt | 0.3 | 87 |
| ORT3 | Stories | Nobody Wanted to Play | 0.3 | 79 |
| ORT3 | Stories | The Rope Swing | 0.3 | 77 |
| ORT3 | Stories | On the Sand | 0.3 | 75 |
| ORT3 | More Stories A | Strawberry Jam | 0.3 | 77 |
| ORT3 | More Stories A | Kipper the Clown | 0.3 | 69 |
| ORT3 | More Stories A | The Jumble Sale | 0.3 | 81 |
| ORT3 | More Stories A | Kipperfs Idea | 0.3 | 78 |
| ORT3 | More Stories A | At the Seaside | 0.3 | 84 |
| ORT3 | More Stories A | The Snowman | 0.3 | 76 |
| ORT3 | More Stories B | At the Pool | 0.3 | 84 |
| ORT3 | More Stories B | The Barbecue | 0.3 | 73 |
| ORT3 | More Stories B | Book Week | 0.3 | 67 |
| ORT3 | More Stories B | Bullfs-eye! | 0.3 | 81 |
| ORT3 | More Stories B | The Carnival | 0.3 | 83 |
| ORT3 | More Stories B | The Cold Day | 0.3 | 75 |
| ORT3 | First Sentences | The Duck Race | 0.3 | 89 |
| ORT3 | First Sentences | Sniff | 0.3 | 128 |
| ORT3 | First Sentences | Pond Dipping | 0.3 | 82 |
| ORT3 | First Sentences | The Ice Rink | 0.3 | 90 |
| ORT3 | First Sentences | The Mud Bath | 0.3 | 90 |
| ORT3 | First Sentences | The Steel Band | 0.3 | 94 |
| ORT4 | Stories | The Storm | 0.4 | 188 |
| ORT4 | Stories | House for Sale | 0.4 | 109 |
| ORT4 | Stories | New House | 0.4 | 120 |
| ORT4 | Stories | Come In! | 0.4 | 109 |
| ORT4 | Stories | The Secret Room | 0.4 | 195 |
| ORT4 | Stories | The Play | 0.4 | 203 |
| ORT4 | More Stories A | The Balloon | 0.4 | 177 |
| ORT4 | More Stories A | The Camcorder | 0.4 | 182 |
| ORT4 | More Stories A | Nobody Got Wet | 0.4 | 97 |
| ORT4 | More Stories A | Poor Old Mum! | 0.4 | 84 |
| ORT4 | More Stories A | The Wedding | 0.4 | 197 |
| ORT4 | More Stories A | The Weather Vane | 0.4 | 107 |
| ORT4 | More Stories B | Swap! | 0.4 | 109 |
| ORT4 | More Stories B | The Dragon Dance | 0.4 | 192 |
| ORT4 | More Stories B | The Flying Elephant | 0.4 | 135 |
| ORT4 | More Stories B | Everyone Got Wet | 0.4 | 200 |
| ORT4 | More Stories B | Wet Paint | 0.4 | 122 |
| ORT4 | More Stories B | The Scarf | 0.4 | 220 |
| ORT4 | More Stories C | An Important Case | 0.4 | 184 |
| ORT4 | More Stories C | Tug of War | 0.4 | 161 |
| ORT4 | More Stories C | Dadfs Jacket | 0.4 | 151 |
| ORT4 | More Stories C | Stuck in the Mud | 0.4 | 129 |
| ORT4 | More Stories C | The Den | 0.4 | 140 |
| ORT4 | More Stories C | Look Smart | 0.4 | 187 |
| ORT5 | Stories | The Magic Key | 0.5 | 273 |
| ORT5 | Stories | Pirate Adventure | 0.5 | 330 |
| ORT5 | Stories | The Dragon Tree | 0.5 | 294 |
| ORT5 | Stories | Gran | 0.5 | 309 |
| ORT5 | Stories | Castle Adventure | 0.5 | 306 |
| ORT5 | Stories | Village in the Snow | 0.5 | 329 |
| ORT5 | More Stories A | The Great Race | 0.5 | 327 |
| ORT5 | More Stories A | A Monster Mistake | 0.5 | 334 |
| ORT5 | More Stories A | Itfs Not Fair | 0.5 | 350 |
| ORT5 | More Stories A | Underground Adventure | 0.5 | 292 |
| ORT5 | More Stories A | Vanishing Cream | 0.5 | 313 |
| ORT5 | More Stories A | The Whatsit | 0.5 | 305 |
| ORT5 | More Stories B | Camping Adventure | 0.5 | 332 |
| ORT5 | More Stories B | A New Classroom | 0.5 | 325 |
| ORT5 | More Stories B | Mum to the Rescue | 0.5 | 348 |
| ORT5 | More Stories B | The New Baby | 0.5 | 360 |
| ORT5 | More Stories B | Noahfs Ark Adventure | 0.5 | 365 |
| ORT5 | More Stories B | Scarecrows | 0.5 | 318 |
| ORT5 | More Stories C | Sleeping Beauty | 0.5 | 321 |
| ORT5 | More Stories C | The Adventure Park | 0.5 | 334 |
| ORT5 | More Stories C | Kipper and the Trolls | 0.5 | 360 |
| ORT5 | More Stories C | Safari Adventure | 0.5 | 323 |
| ORT5 | More Stories C | Drawing Adventure | 0.5 | 369 |
| ORT5 | More Stories C | Dadfs Run | 0.5 | 347 |
| ORT6 | Stories | Land of Dinosaurs | 0.6 | 482 |
| ORT6 | Stories | In the Garden | 0.6 | 443 |
| ORT6 | Stories | Kipper and the Giant | 0.6 | 482 |
| ORT6 | Stories | The Outing | 0.6 | 509 |
| ORT6 | Stories | Robin Hood | 0.6 | 614 |
| ORT6 | Stories | The Treasure Chest | 0.6 | 737 |
| ORT6 | More Stories A | Rotten Apples | 0.6-0.7 | 465 |
| ORT6 | More Stories A | Christmas Adventure | 0.6-0.7 | 465 |
| ORT6 | More Stories A | The Go-kart Race | 0.6-0.7 | 478 |
| ORT6 | More Stories A | A Fright in the Night | 0.6-0.7 | 480 |
| ORT6 | More Stories A | The Laughing Princess | 0.6-0.7 | 470 |
| ORT6 | More Stories A | The Shiny Key | 0.6-0.7 | 492 |
| ORT6 | More Stories B | Paris Adventure | 0.6-0.7 | 481 |
| ORT6 | More Stories B | The Stolen Crown Part 1 | 0.6-0.7 | 563 |
| ORT6 | More Stories B | The Stolen Crown Part 2 | 0.6-0.7 | 522 |
| ORT6 | More Stories B | Olympic Adventure | 0.6-0.7 | 517 |
| ORT6 | More Stories B | A Ship in Trouble | 0.6-0.7 | 534 |
| ORT6 | More Stories B | Homework! | 0.6-0.7 | 519 |
| ORT7 | Stories | The Broken Roof | 0.7-0.8 | 983 |
| ORT7 | Stories | Lost in the Jungle | 0.7-0.8 | 969 |
| ORT7 | Stories | The Lost Key | 0.7-0.8 | 1051 |
| ORT7 | Stories | Red Planet | 0.7-0.8 | 904 |
| ORT7 | Stories | The Willow Pattern Plot | 0.7-0.8 | 928 |
| ORT7 | Stories | Submarine Adventure | 0.7-0.8 | 890 |
| ORT7 | More Stories A | The Bully | 0.7-0.8 | 848 |
| ORT7 | More Stories A | Chinese Adventure | 0.7-0.8 | 879 |
| ORT7 | More Stories A | The Hunt for Gold | 0.7-0.8 | 916 |
| ORT7 | More Stories A | The Jigsaw Puzzle | 0.7-0.8 | 853 |
| ORT7 | More Stories A | The Motorway | 0.7-0.8 | 884 |
| ORT7 | More Stories A | Roman Adventure | 0.7-0.8 | 867 |
| ORT7 | More Stories B | The Power Cut | 0.7-0.8 | 971 |
| ORT7 | More Stories B | Australian Adventure | 0.7-0.8 | 889 |
| ORT7 | More Stories B | The Riddle Stone Part 1 | 0.7-0.8 | 913 |
| ORT7 | More Stories B | The Riddle Stone Part 2 | 0.7-0.8 | 932 |
| ORT7 | More Stories B | A Sea Mystery | 0.7-0.8 | 934 |
| ORT7 | More Stories B | The Big Breakfast | 0.7-0.8 | 860 |
| ORT8 | Stories | The Kidnappers | 0.9-1.0 | 878 |
| ORT8 | Stories | Viking Adventure | 0.9-1.0 | 914 |
| ORT8 | Stories | The Rainbow Machine | 0.9-1.0 | 992 |
| ORT8 | Stories | The Flying Carpet | 0.9-1.0 | 1037 |
| ORT8 | Stories | A Day in London | 0.9-1.0 | 890 |
| ORT8 | Stories | Victorian Adventure | 0.9-1.0 | 920 |
| ORT8 | More Stories A | Pocket Money | 0.9-1.0 | 1267 |
| ORT8 | More Stories A | The Evil Genie | 0.9-1.0 | 1295 |
| ORT8 | More Stories A | Save Floppy! | 0.9-1.0 | 1248 |
| ORT8 | More Stories A | What Was It Like? | 0.9-1.0 | 1239 |
| ORT8 | More Stories A | Flood! | 0.9-1.0 | 1148 |
| ORT8 | More Stories A | Egyptian Adventure | 0.9-1.0 | 1128 |
| ORT9 | Stories | Green Island | 1.0-1.4 | 1444 |
| ORT9 | Stories | Storm Castle | 1.0-1.4 | 1390 |
| ORT9 | Stories | Superdog | 1.0-1.4 | 1488 |
| ORT9 | Stories | The Litter Queen | 1.0-1.4 | 1452 |
| ORT9 | Stories | The Quest | 1.0-1.4 | 1505 |
| ORT9 | Stories | Survival Adventure | 1.0-1.4 | 1471 |
| ORT9 | More Stories A | The Blue Eye | 1.0-1.4 | 1217 |
| ORT9 | More Stories A | Rescue! | 1.0-1.4 | 1306 |
| ORT9 | More Stories A | Dutch Adventure | 1.0-1.4 | 1368 |
| ORT9 | More Stories A | The Finest in the Land | 1.0-1.4 | 1274 |
| ORT9 | More Stories A | The Flying Machine | 1.0-1.4 | 1281 |
| ORT9 | More Stories A | Key Trouble | 1.0-1.4 | 1278 |