The trailer for the fourth season of “Sex Education” prepares us for the emotional end of the series

All good things must come to an end, including Netflix’s Enlightenment lessons. The sweet, raunchy coming-of-age series is bowing out for its fourth and final season, and from the trailer, it’s going to be an especially emotional ride.

This season, change is in the air. With Moordale closed, Otis (Asa Butterfield), Eric (Ncuti Gatwa) and their classmates must now find their way at a new school: the free-spirited Cavendish College. (Who already has her own sex therapist!) Meanwhile, Maeve (Emma Mackey) adjusts to her program in America, and Jean (Gillian Anderson) copes with raising her newborn baby on her own.

But in the midst of all these changes, Enlightenment lessons Season 4 promises some classic sexual machinations and the coming-of-age lessons that come with them. Otis struggles to do a good act, Aimee (Aimee Lou Wood) catalogs her orgasms, and Jean starts a radio show giving sex advice. Hopefully she has some additional advice on how to cope with the ending Enlightenment lessonsbecause it will certainly be missed.

Season 4 of Enlightenment lessons Premieres September 21st on Netflix.