These are a list of episodes from Total Drama High School. The series ran for 78 episodes from 2012 to 2015.
Season 1 (2012-2013)[]
| # | Title | Airdate | Brief Summary |
| 1 | The First Day of School | ||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | Happy H-H-Halloween | ||
| 7 | Heather: The Musical! | ||
| 8 | |||
| 9 | |||
| 10 | |||
| 11 | |||
| 12 | |||
| 13 | |||
| 14 | |||
| 15 | |||
| 16 | |||
| 17 | |||
| 18 | |||
| 19 | |||
| 20 | |||
| 21 | |||
| 22 | |||
| 23 | |||
| 24 | |||
| 25/26 | The Field Trip |
Season 2 (2013-2014)[]
| # | Title | Airdate | Brief Summary |
| 27 | |||
| 28 | |||
| 29 | |||
| 30 | |||
| 31 | |||
| 32 | |||
| 33 | |||
| 34 | |||
| 35 | |||
| 36 | |||
| 37 | |||
| 38 | |||
| 39 | |||
| 40 | |||
| 41 | |||
| 42 | |||
| 43 | |||
| 44 | |||
| 45 | |||
| 46 | |||
| 47 | |||
| 48 | |||
| 49 | |||
| 50 | |||
| 51 | |||
| 52 |
Season 3 (2014-2015)[]
| # | Title | Airdate | Brief Summary |
| 53 | |||
| 54 | |||
| 55 | |||
| 56 | |||
| 57 | |||
| 58 | |||
| 59 | |||
| 60 | |||
| 61 | |||
| 62 | |||
| 63 | |||
| 64 | |||
| 65 | |||
| 66 | |||
| 67 | |||
| 68 | |||
| 69 | |||
| 70 | |||
| 71 | |||
| 72 | |||
| 73 | |||
| 74 | |||
| 75 | |||
| 76 | |||
| 77/78 | Graduation | In the series finale, |