In "Klassfesten" Swedish celebrities compete against each other in knowledge from their own time in primary school. Each week, two celebrities are pitted against each other in subjects ranging from history and music to PE and mathematics. During the competition they also share memories from their time in school.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Morgan Alling & Maria Lundqvist | 2017-08-26 | 45 min |
| Season 1 | Episode 2 | Camilla Läckberg & Anders Bagge | 2017-09-02 | 45 min |
| Season 1 | Episode 3 | Lotta Engberg & Björn Ferry | 2017-09-09 | 45 min |
| Season 1 | Episode 4 | Pernilla Wahlgren & Peter Magnusson | 2017-09-16 | 45 min |
| Season 1 | Episode 5 | Marie Serneholt & Stefan Holm | 2017-09-23 | 45 min |
| Season 1 | Episode 6 | Pia Johansson & Andreas Lundstedt | 2017-09-30 | 45 min |
| Season 1 | Episode 7 | Agneta Sjödin & Kalle Moraeus | 2017-10-07 | 45 min |
| Season 1 | Episode 8 | Magdalena Forsberg & Dragomir Mrsic | 2017-10-14 | 45 min |
| Season 2 | Episode 1 | Maria Montazami & Kjell Bergqvist | 2018-08-18 | 45 min |
| Season 2 | Episode 2 | Hanna Hedlund & Claes Malmberg | 2018-08-25 | 45 min |
| Season 2 | Episode 3 | Ewa Fröling & Jonas Hallberg | 2018-09-01 | 45 min |
| Season 2 | Episode 4 | Carolina Gynning & Tomas Wassberg | 2018-09-15 | 45 min |
| Season 2 | Episode 5 | Tina Nordström & Samir Badran | 2018-09-22 | 45 min |
| Season 2 | Episode 6 | Sofia Wistam & Edward Blom | 2018-09-29 | 45 min |
| Season 2 | Episode 7 | Bianca Ingrosso & Jesper Blomqvist | 2018-10-05 | 45 min |
| Season 3 | Episode 1 | Lisa Nilsson & Mark Levengood | 2019-08-17 | 45 min |
| Season 3 | Episode 2 | Carolina Klüft & Måns Möller | 2019-08-24 | 45 min |
| Season 3 | Episode 3 | Mia Parnevik & Viktor Frisk | 2019-08-31 | 45 min |
| Season 3 | Episode 4 | Tommy Körberg & Robert Gustafsson | 2019-09-07 | 45 min |
| Season 3 | Episode 5 | Özz Nûjen & Lotta Schelin | 2019-09-14 | 45 min |
| Season 3 | Episode 6 | Daniel Norberg & Gudrun Schyman | 2019-09-21 | 45 min |
| Season 3 | Episode 7 | Caroline af Ugglas & Glenn Hysén | 2019-09-28 | 45 min |
| Season 3 | Episode 8 | Jessica Andersson & Dan Ekborg | 2019-10-05 | 45 min |
| Season 4 | Episode 1 | Martin Stenmarck & Sarah Dawn Finer | 2020-08-22 | 45 min |
| Season 4 | Episode 2 | Ola Forssmed & Carola Häggkvist | 2020-08-29 | 45 min |
| Season 4 | Episode 3 | Nanne Grönvall & Stefan Sauk | 2020-09-12 | 45 min |
| Season 4 | Episode 4 | Kishti Tomita & Robin Bengtsson | 2020-09-19 | 45 min |
| Season 4 | Episode 5 | Christian "Kicken" Lundqvist & Jan Björklund | 2020-09-26 | 45 min |
| Season 4 | Episode 6 | Kristin Kaspersen & Johan Olsson | 2020-10-03 | 45 min |
| Season 4 | Episode 7 | Anna Book & Margaux Dietz | 2020-10-10 | 45 min |
| Season 4 | Episode 8 | Shirley Clamp & Eric Gadd | 2020-10-17 | 45 min |
