This research seeks to develop further understandings of effectiveness of the  Japan Exchange and Teaching (JET)  Programme. The JET programme is an internationalisation programme of which employs primarily native English language speakers into the role of Assistant Language Teachers of whom aid in teaching English within school settings across Japan. Inspiration to undertake the project arose through an observation that previous research into the JET programme displays an overwhelmingly negative perspective of the programme’s effectiveness, not least due to the consistent reduction in Japan’s perceived foreign language attainment rates in recent years. This study seeks to develop a new angle of understanding regarding the JET programme, namely through analysing its Assistant Language Teacher’s and Japanese Teachers of English’s perceptions of their own experiences within the programme, and what they each determine effectiveness to be within their own roles. These perceptions were elicited through joint interviews with pairs of Assistant Language Teachers and Japanese Teachers of English of whom work or worked together. Four interviews took place harbouring two participants in each, totalling eight participants. Through utilisation of thematic and multimodal analytical methodologies in tandem, participant pairs’ individual and collaboratively created perspectives were attained. Results displayed the importance of individual relationships towards effectiveness within participants’ working lives. Effectiveness was primarily displayed through empathetic understanding and supporting one another, alongside actions of which allowed participants to challenge the JET programme together and empower their own relationships in the process. Further, theoretical frameworks of language teacher effectiveness are utilised and display intriguing results pertaining to how participants fulfil their working roles, and how these roles act in empowering potentially problematic norms of what a native speaker is.