8.10 avg 13 episodes 8.6 → 8.7 22 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Room | 8.6 | 40 |
| 2 | The Fall | 8.2 | 33 |
| 3 | The Party | 8.7 | 32 |
| 4 | Puppy Dog Tails | 7.6 | 27 |
| 5 | Grade-Point: Average | 7.9 | 30 |
| 6 | The Wedding | 8.4 | 35 |
| 7 | The Poxfather | 8.5 | 30 |
| 8 | House of Games | 7.6 | 22 |
| 9 | Marti the Monster | 8.1 | 24 |
| 10 | Sweet Misery | 7.6 | 23 |
| 11 | Babe Raider | 8.0 | 32 |
| 12 | All Systems No Go | 7.4 | 24 |
| 13 | Male Code Blue | 8.7 | 25 |
7.94 avg 13 episodes 8.5 → 7.8 22 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Date with Derek | 8.5 | 24 |
| 2 | He Shoots, She Scores | 7.7 | 27 |
| 3 | Middle Manic | 7.9 | 23 |
| 4 | The Venturian Candidate | 7.8 | 17 |
| 5 | Battle of the Bands | 7.7 | 19 |
| 6 | Lies My Brother Told Me | 8.2 | 20 |
| 7 | Crushing the Coach | 8.1 | 21 |
| 8 | Prank Wars | 7.9 | 18 |
| 9 | Freaked Out Friday | 6.6 | 15 |
| 10 | The Bet | 8.8 | 25 |
| 11 | Mice and Men | 8.2 | 16 |
| 12 | Dinner Guest | 8.0 | 18 |
| 13 | The Dating Game | 7.8 | 25 |
7.96 avg 26 episodes 7.3 → 8.2 22 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Two Timing Derek | 7.3 | 24 |
| 2 | It's Our Party | 8.2 | 26 |
| 3 | Misadventures in Babysitting | 8.3 | 25 |
| 4 | Slacker Mom | 7.4 | 21 |
| 5 | Power Failure | 7.4 | 33 |
| 6 | Don't Take a Tip from Me | 7.7 | 22 |
| 7 | The Bully Brothers | 8.9 | 26 |
| 8 | Home Movies | 8.0 | 20 |
| 9 | Show-Off-Tune | 8.0 | 31 |
| 10 | Summer School Blues | 8.8 | 25 |
| 11 | Grade A Cheater | 8.2 | 23 |
| 12 | Adios, Derek | 9.0 | 29 |
| 13 | Fright Night | 8.1 | 24 |
| 14 | Sixteen Sparkplugs | 7.9 | 18 |
| 15 | When Derek Meets Sally | 8.0 | 23 |
| 16 | A Very Derekus Christmas | 7.2 | 25 |
| 17 | Ivanwho? | 8.6 | 24 |
| 18 | Rumor Mill (Valentine's Day) | 6.2 | 29 |
| 19 | Derek Un-Done | 7.9 | 15 |
| 20 | Not So Sweet Sixteen | 8.1 | 20 |
| 21 | Driving Lessons | 7.0 | 14 |
| 22 | Make No Prom-ises | 7.6 | 17 |
| 23 | Cheerleader Casey | 8.7 | 32 |
| 24 | Allergy Season | 7.9 | 20 |
| 25 | Things That Go Bump in the Night | 8.3 | 17 |
| 26 | Derek's School of Dating | 8.2 | 16 |
8.08 avg 18 episodes 8.1 → 8.4 22 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Two Kisses, One Party | 8.1 | 24 |
| 2 | Open Mic Plight | 8.8 | 16 |
| 3 | Just Friends | 8.6 | 15 |
| 4 | March Break | 8.8 | 15 |
| 5 | 6 1/2 | 7.9 | 18 |
| 6 | Derek Denies Denial | 7.9 | 12 |
| 7 | Happy New Schoolyear | 8.0 | 14 |
| 8 | No Secrets | 7.9 | 16 |
| 9 | Take a Stepkid to Work | 7.4 | 13 |
| 10 | No More Games | 7.5 | 14 |
| 11 | How I Met Your Stepbro | 7.9 | 14 |
| 12 | Casey & Ralph?! | 8.1 | 12 |
| 13 | Tuesday Afternoon Fever | 8.2 | 13 |
| 14 | Teddy's Back | 7.6 | 18 |
| 15 | Rude Awakenings | 8.3 | 15 |
| 16 | Truman's Last Chance | 8.6 | 19 |
| 17 | Surprise! | 7.4 | 16 |
| 18 | Futuritis | 8.4 | 29 |
