This workshop is designed as an introduction to proficiency concepts, the ACTFL Proficiency Guidelines, and the interview as an assessment tool. The workshop includes viewing of recorded interviews conducted by a trainer in English or the common language of the group. Day 1 includes the rating scale, interview structure and elicitation techniques. Day 2 deals with the implications of the OPI on classroom instruction and as a model for curriculum development and lesson planning.  Prochievement testing is also discussed.