It looks like you're referring to a specific video title: — likely part of the popular Russian Institute adult film series (e.g., from Marc Dorcel).
Russian Institute: Lesson 1 is credited with launching a franchise that has spanned over 28 editions, moving from its original rural school settings to more modern urban environments in later installments. Russian Institute Lesson 1 - Répertoire des films classés russian institute lesson 1avi hot