De afgematte 74-jarige hagedis Leo zit al tientallen jaren vast in hetzelfde klaslokaal in Florida met zijn terrariumgenootschildpad. Als hij ontdekt dat hij nog maar één jaar te leven heeft, is hij van plan te ontsnappen en het leven aan de buitenkant te ervaren, maar in plaats daarvan raakt hij verstrikt in de problemen van zijn angstige leerlingen, waaronder een onmogelijk gemene vervangende leraar.
| Editing | Darrian M. James | Associate Editor |
| Visual Effects | Carter Goodrich | Character Designer |
| Writing | Robert Smigel | Writer |
| Production | Barry Bernardi | Executive Producer |
| Production | Allen Covert | Executive Producer |
| Production | Mireille Soria | Producer |
| Editing | Patrick Voetberg | Editor |
| Editing | Joseph Titone | Editor |
| Sound | Geoff Zanelli | Original Music Composer |
| Sound | Robert Smigel | Songs |
| Writing | Ken Morrissey | Head of Story |
| Visual Effects | Jason Figliozzi | Animation Director |
| Visual Effects | Patrick Mate | Character Designer |
| Visual Effects | David Wachtenheim | Character Designer |
| Visual Effects | Wouter Tulp | Character Designer |
| Production | Jenné Marie Guerra | Associate Producer |
| Visual Effects | David Ward | Animation Supervisor |
| Art | Kristen Anderson | Supervising Art Director |
| Production | Amber Horn | Casting |
| Production | Danielle Aufiero | Casting |
| Crew | James Cordero | In Memory Of |
| Sound | Kevin Grady | Music Supervisor |
| Sound | Bryan Bonwell | Music Supervisor |
| Production | Daniel Cohen | Line Producer |
| Art | Simon Rodgers | Production Design |
| Lighting | Sharon Calahan | Other |
| Production | Allison Osborne | Production Manager |
| Production | Shane Mulholland | Production Manager |
| Crew | Viola Chen | Digital Producer |
| Production | Carlos Hombrebueno | Other |
| Crew | John Rix | CG Supervisor |
| Crew | Kai Pederson | CG Supervisor |
| Visual Effects | Bradley Sick | Modelling Supervisor |
| Lighting | Marco Iannaccone | Rigging Supervisor |
| Visual Effects | Clementine Lo | Effects Supervisor |
| Visual Effects | Matthew Newhart | Layout Supervisor |
| Lighting | Rodrigo Janz | Lighting Supervisor |
| Production | Brian Robinson | Co-Producer |
| Sound | Elmo Weber | Supervising Sound Editor |
| Sound | Odin Benitez | Supervising Sound Editor |
| Sound | Deb Adair | Sound Re-Recording Mixer |
| Sound | Brandon Proctor | Sound Re-Recording Mixer |
| Directing | Robert Smigel | Director |
| Directing | Robert Marianetti | Director |
| Directing | David Wachtenheim | Director |
| Production | Adam Sandler | Producer |
| Writing | Adam Sandler | Writer |
| Writing | Paul Sado | Writer |
| Production | Paul Sado | Executive Producer |
| Visual Effects | Henry Wong | Color Designer |
