1968 | 7 Episodes

Season 1 of Please Sir! premiered on November 8, 1968.

1969 | 13 Episodes

Season 2 of Please Sir! premiered on September 20, 1969.

1970 | 14 Episodes

Season 3 of Please Sir! premiered on September 20, 1970.

1971 | 21 Episodes

Season 4 of Please Sir! premiered on September 18, 1971.