So this week's Friday Fiver is comprised of our picks for telly's greatest teachers - those who inspired, educated and mostly just made us laugh. If only we'd had this lot at our school...
Simon Casey (Andrew Lincoln) - Teachers (2001-2003)
A character so funny, charming and likeable that he almost single-handedly tempted us into entering the teaching profession, Lincoln's cheeky English teacher was the anchor of the Channel 4 show for its first two years and returned for a brief guest stint in the third series. Honourable mentions to Simon's immature cohorts Kurt (Navin Chowdhry) and Brian (Adrian Bower), but the show never really recovered from the loss of its magnetic lead - the abysmal fourth run is testament to that.
Principal Skinner (Harry Shearer) - The Simpsons (1989-present)
One of The Simpsons' best and possibly most under-rated characters, Seymour Skinner has made this writer weep with laughter on many occasions. He's most often seen tangling with his eternal nemesis Bart, but Skinner's finest moments come when he's paired up with stuffy Superintendent Chalmers - the pair's vignette in 1996's '22 Short Films About Springfield' ("Mmmm, steamed clams!") is some of the finest comedy Fox's animated sitcom has ever seen.
Mrs McClusky (Gwyneth Powell) - Grange Hill (1978-2008)
Many teachers graced Grange Hill over the course of three decades, but Gwyneth Powell's headmistress Mrs McCluskey is certainly one of the most memorable. She was an example of those firm but fair teachers you can't help but feel respect for - the kind who wouldn't hesitate to give a student detention if they were bad, but also goes the extra mile to help them. This winning approach saw Mrs McCluskey walk the halls of Grange Hill for an impressive ten years between 1981 and 1991. What a woman.
Principal Belding (Dennis Haskins) - Saved by the Bell (1989-1993)
TV viewers of a certain age will have thrilled to the exploits of Zack (Mark-Paul Gosselaar), Slater (Mario Lopez) and company, but Saved by the Bell wouldn't have been the same without level-headed principal Richard Belding and his catchphrase, "Hey, hey, hey, hey, hey! What is going on here?". Bayside's chief may have been strait-laced, but he cared about his pupils and would always help them out in a fix. Let's just try to forget The New Class, eh?
Mr Garrison - South Park (1997-present)
To be honest, we were a bit dubious about including two characters from animated sitcoms in this list. But really you can't get a pair more different than Principal Skinner and Mr Garrison. The South Park educator is something of a...complex fellow, who outside the classroom spent years wrestling with his sexuality, underwent two sex changes and became a little too friendly with his trusty puppet companions Mr Hat and Mr Twig. Mr Garrison sure brings a lot of drama to South Park, even if it usually goes over the heads of Cartman and co.
Did we name your favourite TV teacher? Share your own picks below!