If you accept this as Season 4, here is the correct index:

Filmed at Uxbridge Technical College instead of the LWT studios.

| # | Episode Title | Original Air Date | Brief Synopsis | | :--- | :--- | :--- | :--- | | | "The Great 1979 Strike" | 6 Oct 1979 | A gas strike causes no heating in the college. Students try creative ways to stay warm while Mr. Brown attempts to teach. | | 2 | "The Hypnotist" | 13 Oct 1979 | A student claims to be a hypnotist and accidentally puts Mr. Brown into a trance, leading to bizarre classroom behavior. | | 3 | "Rafael’s Contract" | 20 Oct 1979 | New Spanish student Rafael faces pressure from his wealthy father to leave the class and return home. | | 4 | "The New Door" | 27 Oct 1979 | A classroom door is replaced, but the workmen (two Irishmen) cause chaos, trapping everyone inside. | | 5 | "The Exam" | 3 Nov 1979 | Final exams approach. Students cheat in inventive ways, but a mix-up leads to them taking the wrong test. | | 6 | "The Reunion" | 10 Nov 1979 | A reunion of former students is organized. Old flames and rivalries resurface, ending the series on a heartwarming note. |

Barry Evans refused to return (he had retired from acting). He was replaced by Paul Barrosse as "Mr. Bob Hartley."

– Giovanni’s mother pays a surprise visit to the classroom. A Rash Decision