In an educational context, local, ecologically valid tests can reflect the use of literacy and thinking tools. These tests present a challenge to central, content-focused, high-stakes testing, and to transmission approaches to teaching. They require teachers to accept knowledge as a verb, and to design assessment protocols that reflect co-constructive ways of teaching. This article reports the outcome of praxis action research with middle and secondary school teachers who incorporated topic-appropriate literacy and thinking tools into their teaching. They also redesigned their local tests linked to high-stakes test protocols to reflect the use of these tools. A thematic analysis of observations and interviews suggests that this process impacted on the structural characteristics (morés) of the schools, and posed affective, cognitive and pedagogical challenges to teachers.