Maggie Peters:
Maggie is Simon's girlfriend during series 1. She is a police officer but a laid back one. She still knows how to have fun and a laugh. She lets Simon move in with her and really likes him a lot but then Simon sleeps with Jenny and goes home and breaks up with her.

Stephen Dawking:
Stephen teaches Science during the first series but then seemed to disappear and didn't appear in series 2. He was a bit of a strange man, he always got up to go to his next lesson about 5 seconds before the bell went and lived alone in a weird spooky house.

Mr Chong:
Mr Chong is the Chinese maths teacher thats always around the staff room but never has any lines. He seems to be the one who is the father to Carol's baby but Carol starts growling at him if he gets anywhere near her!

Geoff Casey:
Geoff is Simon's dad who appears during the first series as Simon is living with him. He is seeing Marcella and one night invites her round for dinner and they shock Simon with the news that not only are they together but are getting married!

Marcella Casey:
Marcella is Geoff's new wife. She has a four year old daughter and they both move in with Geoff before getting married.

Peter Gately:
Peter is Susan's husband. They appear to be having problems when Simon and Maggie go round for dinner one night but then he turns up at an open evening demanding Susan go to a work dinner with him but she refuses and, after having a small breakdown, leaves him.

Alec:
Alec comes to the school as an educational psychologist after one the students keeps starting fires but then starts seeing Jenny which annoys Susan as he is always walking around naked. Him and Jenny seem to be very happy together though but then Jenny suddenly seems to get fed up and dumps him.

Eileen:
Eileen is the "fit" dinner lady Brian spots one day and really fancies. He gets Simon to invite her to the pub so he can get to know her but then she ends up sleeping with Simon. However, when Simon's left again she asks Brian out and they are together for a day but Brian dumps her after getting advice from a pupil who tells him he has to brush his teeth and phone her all the time and he gets fed up of doing it and bleeding gums!

Ping:
Ping is the Thai bride Bob buys off the internet. As soon as she arrives she ends up sleeping with Ewan but will not sleep with Bob. She speaks little English but learns mostly swear words from living with Bob. They end up getting married but of course she was only doing it for a Visa and tells Bob where to go at the reception.

Pauline Young:
Pauline is a student in Simon's class in series 1. She is a bit of a loudmouth and troublemaker. She flirts with Simon, accuses Bob of looking at her chest and sleeps with her best mates boyfriend.

Jeremy Stevens:
Jeremy is a student in Simon's class in series 1 and then appears in series 3 as a sixth form student. She is a bit of a loudmouth and troublemaker. He is the class swot and is always asking for tests and work to do while the others are quite happy to just mess about.

Bev Jarvis:
Bev is a student in Simon's class in series 1. She is pregnant for most of the series and gives birth near the end. She comes back in series 2 to give a talk on being pregnant and tries her hardest to put everyone off!

Ian Potter:
Ian is a student in Simon's class in series 1. He is the one who starts making the fake porographic pictures with the staff's heads on which they aren't impressed with.

Hayley Scott:
Hayley is a student in Simon's class in series 1. She is going out with Ian and after being grounded for a couple of weeks they get caught in the toilets and cupboard almost having sex.

Arnie Lawson:
Arnie is a student in Simon's class in series 1 and stays on in the sixth form. He is caught smoking cannabis at school which worries Simon as he had been smoking it with him. He also makes Simon think he is a role model when he tells him he wants to become an English teacher but then changes his mind when he finds out how much he would be earning.

Cheryl Cassidy:
Cheryl is a student in Simon's class in series 1. She is going out with her boyfriend but he won't sleep with her so she asks Simon for advice and dumps him but it turns out he slept with Pauline and caught crabs off her. Cheryl is furious because Pauline's her best mate but they soon make friends again.

Kayla Webb:
Kayla is a student in Brian's class in series 2 and 3. She is a bit of a troublemaker and is often cheeky to Brian. She gets away with a lot though because she is Liz's daughter so Brian doesn't want to get her in trouble.

Adam Grint:
Grint is a student in Kurt's class in series 2 and 3. He is bald and fat, has no friends and is picked on by both the students and the teachers.

Brandon Keane:
Brandon is a student in Kurt's class in series 2 and 3. He is about a foot taller than Kurt and knows Kurt is scared of him so often just walks out of class and is cheeky becuase he knows Kurt won't do anything about it!

Anthony Millington:
Anthony is a sixth form student at the new school. He pretends to be a teacher to Penny so she will go out with him. All the others find out he is a student but don't tell her. When she finds out she is angry at first but then carries on with the relationship until he dumps her and then they are constantly arguing. He tells Liz about it but then they end up getting back together before it goes any further.