Das könnte "Man schiesst nicht auf den Lehrer" (Kanada 1977) sein.

Inhaltszusammenfassung von Iotis Erlewine, All Movie Guide:
Based on the novel by Max Braithwaite, this film follows the trials of young schoolteacher Max Brown (Bud Cort) as he travels to Saskatchewan to serve as a teacher in a one-room, small-town schoolhouse. Struggling with the hardships presented by the Depression, the local townsfolk prove to be unfriendly, until Max meets up with housewife Alice Field (Samantha Eggar).

[german.imdb.com]