S3 E1 • The Two Mrs Hamptons

Lily, Martha and Jas are smart but socially awkward girls trying to make sense of life, boys and fitting in. Lily realises she's turning out to be just like her mum. When she discovers her mum's school grades suddenly dropped from straight As to Cs and Ds the year she got her first boyfriend, Lily is desperate to avoid the same thing happening to her now she's officially going out with Rob. Meanwhile Rufus, who has a big crush on Martha, is helping her with her conversational Spanish. When Rufus asks Martha out and she says no he figures she must already have a boyfriend and guesses it's Ollie. Uncomfortable with the situation, yet anxious still to keep Rufus as her tutor, Martha decides to pretend she is actually going out with Ollie.

Première diffusion : 31 août 2017

S3 E2 • Ms Perfect

History teacher Mr Malone is jealous when new geography teacher Ms Parfitt arrives on the scene and all the pupils are excited about how brilliant a teacher she is. When it's announced there is not enough money to fund both a geography and history field trip and the most popular trip will be the one that gets the funding, both teachers go head to head in a fierce competition to get their field trip chosen. Meanwhile, Lily is complaining Rob is too 'boy' - she finds his boisterousness and burping gross and decides to give him a dose of his own medicine.

Première diffusion : 7 septembre 2017

S3 E3 • Science Chic

A business studies competition is announced at school, and both Lily and Martha desperately want to be project manager. Lily thinks she would be the best candidate because the task is to organise a fashion show and she is more creative. Martha wants to be project manager so she gets to meet her business hero Sir Adam Salt. It is decided the role will go to the one who can come up with the best outfit design.

Première diffusion : 14 septembre 2017

S3 E4 • A Room of Her Own

Lily decides her bedroom is babyish and needs a makeover to reflect the fact she's now a sophisticated teen. Meanwhile in Life Lessons class, Martha and Ollie volunteer to be parents to a new 'baby app', thinking it'll be an easy task. Utterly defeated by the baby app's constant crying and demands they palm 'baby' off on Cassie and Maxwell, who in turn are soon at their wits' end.

Première diffusion : 21 septembre 2017

S3 E5 • Never the Bridesmaid, Never the Bride

Jas is asked to be a bridesmaid and is worried about being too clumsy to pull it off. Lily suggests staging a mock wedding so Jas can have a rehearsal - with herself and Rob as the bride and groom. Meanwhile, Mr Salford has been asked to make a presentation to become the area youth hockey rep. Terrified of public speaking, he gets Mrs Griggs to help him.

Première diffusion : 28 septembre 2017

S3 E6 • Fly Me to the Moon

The girls create science projects for Experiment Friday. Jas transforms the art room into a spaceship to conduct an experiment into how teenage boys deal with being cooped up together on a long space voyage. Meanwhile, Lily and Martha have been paired with Cassie and Maxwell. Lily is fretting that she and Rob are obviously incompatible as he hates her favourite naturalist Steve Batchelor and Cassie and Maxwell decide to 'study' Lily as part of their science project, researching teen relationship issues.

Première diffusion : 5 octobre 2017

S3 E7 • Hormone Horror

Martha starts acting oddly, getting emotional and over-reacting to things. She's horrified to realise that her hormones are kicking in. Lily sympathises - she feels the same. Jas isn't feeling any effects from her hormones but, not wanting to feel left out, decides to fake it. Faced with two seemingly hormonal teenagers, Mrs Fitzgerald and Mr Salford join forces to address their problem. Deciding that exercise is a great antidote, they try to encourage Jas and Martha to join the new street dance class Ms Parfitt is running. Meanwhile, Mrs Griggs has got a girl crush on Ms Parfitt and thinks Ms Parfitt's street dance class is the perfect opportunity to impress her.

Première diffusion : 12 octobre 2017

S3 E8 • Ultimate Bucket

Martha and Ollie throw Cassie and Maxwell off the maths team, desperate not to be outshone as they were last year by the lightning-fast buzzer technique of the younger pair. Outraged, Cassie and Maxwell vow to fight for their rightful places on the team. After what he considers a near-death experience stranded up a ladder, Alfie is determined to compile and complete a 'bucket list' before it's too late. Jas thinks she's helping him by encouraging him to do the scariest things she can think of, but poor Alfie becomes increasingly traumatised. Meanwhile, Rob has to attend a History Catch Up Club run by Mr Malone. Lily is frustrated, as she's hardly getting to see Rob at all and Ms Parfitt is jealous of the club's popularity.

Première diffusion : 19 octobre 2017

S3 E9 • Anger Management

The school three-legged fun run is coming up. Lily wants Rob to pair up with her, but Rob has plans to run with Jenny Jones, who is more athletic than Lily. Lily gets angry, and Rob is so easy-going he simply backtracks and agrees to partner with Lily. This makes Lily even more upset - Rob is so chilled out it's like he doesn't care! Lily tells Cassie and Maxwell about Rob's inability to get angry and they decide to cure him. Meanwhile, there is competition amongst the parents about who should organise the fun run this year.

Première diffusion : 26 octobre 2017

S3 E10 • Megasaurus

Lily worries that Jas is feeling left out. With Ollie and Martha practically a couple as well as her and Rob, she decides Jas needs a boyfriend. When she hears Rufus talking lovingly about fungal spores, Lily mistakenly thinks he is talking about Jas. She thinks they would make a great couple and decides to coach Jas in dating. Meanwhile, Mrs Griggs launches a mentoring scheme and Maxwell picks Ollie. At first Ollie is flattered, but he soon becomes fed up with Maxwell beating him at chess.

Première diffusion : 2 novembre 2017

S3 E11 • Bug Brooch

Lily is delighted when Rob buys her a present for the first time - only it's a horrible bug-shaped brooch! Jas offers to break it accidentally-on-purpose so Lily won't have to wear it, but Rob catches Jas trying to smash it. Not wanting to drop Lily in it, Jas tells Rob she stole the brooch because she's in love with Rob herself and is so jealous of Lily. Rob believes this, but now Lily and Jas have to pretend to fall out and Jas has to pretend to be in love with an unnerved Rob!

Première diffusion : 9 novembre 2017

S3 E12 • Cranmede Fever

When Lily and Martha get the flu, Maxwell and Cassie are roped into a school quiz.

Première diffusion : 16 novembre 2017

S3 E13 • So Long, Farewell

Martha is offered a place at Greatacre, the boarding school her mother once went to. Ollie can't cope with the idea of Martha leaving and Alfie also goes overboard mourning her potential departure. Ollie is jealous and the two boys go head to head, trying to out-mourn one another. At first both Martha and Mrs Fitzgerald are keen for Martha to accept her place, but Martha starts to have second thoughts. Meanwhile, Lily is excited to learn a Premier League football scout is coming to the school to assess Rob. Jas decides to help coach Lily in how to become the perfect WAG...

Première diffusion : 23 novembre 2017