Learning a minority language in a minority language context can lead to difficulties in language acquisition and maintenance. Language skills at kindergarten entry predict success in a variety of academically relevant areas. Therefore, the goals of this action research were (1) to improve pedagogical practices used for robust vocabulary instruction to students in French-language schools in northeastern Ontario, and (2) to raise awareness among school teams of issues related to minority language instruction through professional development. As a result of this Tier 1 response to intervention, school team members became aware of the influence of their linguistic situation on children’s language acquisition and were able to change their mindset toward minority language instruction, contributing to the success of this action research.