Seasons
Season 1 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 0 | Official Unaired Pilot | 7.3 | 141 |
| 1 | Downtown as Fruits/Eugene's Bike | 7.8 | 436 |
| 2 | The Little Pink Book/Field Trip | 7.8 | 334 |
| 3 | Arnold's Hat/Stoop Kid | 8.1 | 361 |
| 4 | Helga's Makeover/The Old Building | 7.7 | 312 |
| 5 | 6th Grade Girls/The Baseball | 7.8 | 312 |
| 6 | Heat/Snow | 8.3 | 331 |
| 7 | Operation Ruthless/The Vacant Lot | 8.0 | 278 |
| 8 | The List/Haunted Train | 8.2 | 313 |
| 9 | Mugged/Roughin' It | 7.7 | 264 |
| 10 | Door #16/Arnold as Cupid | 7.2 | 250 |
| 11 | Arnold's Christmas | 9.4 | 670 |
| 12 | Benchwarmer/Cool Jerk | 7.4 | 250 |
| 13 | Das Subway/Wheezin' Ed | 7.8 | 255 |
| 14 | Tutoring Torvald/Gerald Comes Over | 7.5 | 232 |
| 15 | Spelling Bee/Pigeon Man | 8.9 | 397 |
| 16 | Olga Comes Home/Sally's Comet | 7.8 | 245 |
| 17 | Abner Come Home/The Sewer King | 7.3 | 221 |
| 18 | False Alarm/World Records | 7.5 | 226 |
| 19 | Magic Show/24 Hours to Live | 7.6 | 227 |
| 20 | Arnold's Valentine | 8.0 | 278 |
Season 2 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | Save the Tree/New Teacher | 7.7 | 205 |
| 2 | Helga's Love Potion/Gerald's Secret | 7.5 | 206 |
| 3 | The Big Scoop/Harold's Kitty | 7.5 | 194 |
| 4 | Longest Monday/Eugene's Pet | 7.5 | 189 |
| 5 | Monkey Business/Big Caesar | 7.4 | 180 |
| 6 | Ransom/Ms. Perfect | 7.5 | 187 |
| 7 | Arnold's Halloween | 8.3 | 267 |
| 8 | Arnold Saves Sid/Hookey | 7.4 | 179 |
| 9 | Freeze Frame/Phoebe Cheats | 7.5 | 177 |
| 10 | Mudbowl/Gerald Moves Out | 7.5 | 182 |
| 11 | The High Life/Best Friends | 7.4 | 166 |
| 12 | Steely Phil/Quantity Time | 7.4 | 175 |
| 13 | Eating Contest/Rhonda's Glasses | 7.6 | 181 |
| 14 | Helga's Boyfriend/Crush on Teacher | 7.4 | 195 |
| 15 | Hall Monitor/Harold's Bar Mitzvah | 7.7 | 184 |
| 16 | Coach Wittenberg/Four-Eyed Jack | 7.7 | 191 |
| 17 | Eugene Goes Bad/What's Opera, Arnold? | 7.8 | 203 |
| 18 | Tour de Pond/Teachers' Strike | 7.5 | 173 |
| 19 | Part Time Friends/Biosquare | 7.5 | 169 |
| 20 | Runaway Float/Partners | 7.6 | 156 |
Season 3 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | Helga Blabs It All/Harold the Butcher | 8.0 | 206 |
| 2 | Dangerous Lumber/Mr. Hyunh Goes Country | 7.8 | 186 |
| 3 | Casa Paradiso/Gerald's Tonsils | 7.2 | 166 |
| 4 | Arnold's Room/Helga vs. Big Patty | 7.6 | 175 |
| 5 | Stinky Goes Hollywood/Olga Gets Engaged | 7.5 | 170 |
| 6 | Curly Snaps/Pre-Teen Scream | 7.6 | 178 |
| 7 | Grandpa's Birthday/Road Trip | 7.3 | 170 |
| 8 | Sid's Revenge/Roller Coaster | 7.0 | 167 |
| 9 | The Aptitude Test/Oskar Gets a Job | 7.2 | 164 |
| 10 | Arnold Betrays Iggy/Helga and the Nanny | 5.7 | 262 |
| 11 | Career Day/Hey Harold! | 7.8 | 174 |
| 12 | Best Man/Cool Party | 6.9 | 184 |
| 13 | Arnold & Lila/Grand Prix | 7.3 | 166 |
| 14 | Arnold's Thanksgiving | 8.1 | 209 |
| 15 | Helga's Show/The Flood | 7.6 | 164 |
| 16 | Phoebe Takes the Fall/The Pig War | 7.1 | 158 |
| 17 | Crabby Author/Rich Kid | 7.6 | 174 |
| 18 | Girl Trouble/School Dance | 6.9 | 171 |
| 19 | School Play | 8.4 | 202 |
Season 4 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | Full Moon/Student Teacher | 7.0 | 164 |
| 2 | Big Gino/Jamie O in Love | 7.2 | 155 |
| 3 | Eugene's Birthday/Stinky's Pumpkin | 7.3 | 153 |
| 4 | The Beeper Queen/Oskar Can't Read? | 7.4 | 154 |
| 5 | Dinner for Four/Phoebe Skips | 7.3 | 163 |
| 6 | Helga's Parrot/Chocolate Turtles | 7.4 | 169 |
| 7 | Love and Cheese/Weighing Harold | 7.1 | 156 |
| 8 | Back to School/Egg Story | 7.1 | 155 |
| 9 | It Girl/Deconstructing Arnold | 7.3 | 154 |
| 10 | Grudge Match/Polishing Rhonda | 7.4 | 148 |
| 11 | Weird Cousin/Baby Oskar | 7.3 | 149 |
| 12 | Grandpa's Sister/Synchronized Swimming | 6.9 | 161 |
| 13 | Helga Sleepwalks/Fighting Families | 7.3 | 159 |
| 14 | Headless Cabbie/Friday the 13th | 7.9 | 180 |
| 15 | Veterans Day | 8.0 | 171 |
| 16 | Helga on the Couch | 9.0 | 311 |
| 17 | Dino Checks Out | 7.6 | 159 |
Season 5 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | Monkeyman!/Buses, Bikes, and Subways | 7.5 | 164 |
| 2 | Helga's Masquerade/Mr. Green Runs | 7.6 | 165 |
| 3 | Sid the Vampire Slayer/Big Sis | 7.1 | 155 |
| 4 | Bag of Money/Principal Simmons | 6.9 | 149 |
| 5 | New Bully on the Block/Phoebe Breaks a Leg | 7.0 | 150 |
| 6 | Parents Day | 8.8 | 230 |
| 7 | Helga's Locket/Sid and Germs | 7.4 | 150 |
| 8 | Suspended/Ernie in Love | 7.2 | 158 |
| 9 | Summer Love | 8.0 | 180 |
| 10 | Stuck in a Tree/Rhonda Goes Broke | 7.0 | 160 |
| 11 | Beaned/Old Iron Man | 7.3 | 155 |
| 12 | Arnold Visits Arnie/Chocolate Boy | 7.8 | 163 |
| 13 | Harold vs. Patty/Rich Guy | 7.2 | 147 |
| 14 | April Fool's Day | 7.5 | 159 |
| 15 | Gerald's Game/Fishing Trip | 6.9 | 151 |
| 16 | Married | 8.0 | 169 |
| 17 | On the Lam/Family Man | 7.2 | 144 |
| 18 | The Racing Mule/Curly's Girl | 6.7 | 138 |
| 19 | The Journal | 8.7 | 252 |
| 20 | Timberly Loves Arnold/Eugene, Eugene! | 6.9 | 134 |
| 21 | Ghost Bride/Gerald vs. Jamie O. | 7.1 | 147 |
| 22 | Simmons' Documentary/Big Bob's Crisis | 6.9 | 141 |
| 23 | Phoebe's Little Problem/Grandpa's Packard | 7.0 | 141 |
