It stars an ensemble cast that includes Asa Butterfield, Gillian Anderson, Ncuti Gatwa, Emma Mackey, Connor Swindells, Kedar Williams-Stirling, Alistair Petrie, Mimi Keene, and Aimee Lou Wood.

Other students at Moordale Secondary include Eric Effiong, Otis's best friend and the gay son of Ghanaian-Nigerian immigrants; Maeve Wiley, an intelligent and rebellious teen with a troubled family past; Adam Groff, headmaster Michael Groff's son who develops a bullying nature out of his own self-loathing; Jackson Marchetti, the head boy struggling to meet the high expectations set for him; Ruby Matthews, Anwar Bakshi, and Olivia Hanan, members of a popular clique known as "the Untouchables"; Aimee Gibbs, an Untouchable who secretly befriends Maeve; and Lily Iglehart, a writer of alien erotica determined to lose her virginity.

Otis's father, womaniser Remi Milburn, and Maeve's mother, drug addict Erin Wiley, later return to Moordale to reconnect with their children.

Maeve works with English teacher Emily Sands to apply for an exchange program in America, Jean expects a baby in the near future, and new headmistress Hope Haddon's plans to revamp Moordale Secondary creates conflict with the students.

Otis competes with a rival sex therapist on campus while juggling his long-distance relationship with Maeve, who begins her studies at the prestigious Wallace University in the United States.

[1] On 17 May 2018, it was announced that Gillian Anderson, Emma Mackey, Asa Butterfield, Ncuti Gatwa, Connor Swindells, and Kedar Williams-Stirling had joined the show's main cast.

[19] Dan Levy, Thaddea Graham, Lisa McGrillis and Eshaan Akbar joined the cast in series 4, while Simone Ashley, Tanya Reynolds and Patricia Allison did not return.

[1] Filming for the first series took place at several locations in the Wye Valley in both Wales and England, including Llandogo, Tintern, Symonds Yat, Monmouth, and Redbrook.

[24] The setting of Sex Education appears to be modern-day Britain, in the fictional village of Moordale, with various elements that serve to place the show in an uncertain time and location.

The website's critical consensus reads, "Bawdy, heartfelt, and surprisingly wise, Sex Education is a raucous romp through a group of teenagers whose sexual misadventures are so thoughtfully rendered, adults could learn a thing or two from them.

The critical consensus reads, "Sex Education's sophomore season definitely has more going on, but by treating each new subject with care and humour, it leaves plenty of space for its characters to grow.

The critical consensus reads, "With a seemingly endless desire to dive deeper into its characters paired perfectly with its talented ensemble, Sex Education's third season is a masterclass in brutally honest, brilliantly heartfelt comedy.

The critical consensus reads, "As sweetly empathetic and inclusive as ever, Sex Education's final season serves as a bittersweet -- but largely satisfying -- farewell.

[36] Sex Education is often noted for its unique visual language and aesthetics, which employs American teen culture tropes into a British setting.

[59][60][61][62][63] Series director Ben Taylor said: "When [Laurie Nunn] was writing the script and the world, they tended to be on the whole more American references to the school experience I've seen in film and TV than any British ones.