Some of the disenchantment with immersion comes from unrealistic expectations. Immersion doesn’t – and isn’t intended to – produce graduates who speak French with the fluency of native speakers. What immersion does provide is an important building block on which graduates can develop their language skills. Language proficiency is both an intellectual and a physical activity; without practice, it diminishes dramatically.

Graham Fraser in the Globe & Mail / June 12, 2016
Fraser is the Federal Official Languages Commissioner