We address the current concerns about teaching-to-the-test and its association with declining dispositions towards further study of mathematics and the consequences for choice of STEM subjects at university. In particular, through a mixed study including a large survey sample of over 1000 students and their teachers, and focussed qualitative case studies, we explored the impact of "transmissionist" pedagogic practices on learning outcomes. We report on the construction and validation of a scale to measure teachers' self-reported pedagogy. We then use this measure in combination with the students' survey data and through regression modelling we illustrate significant associations between the pedagogic measure and students' mathematics dispositions. Finally, we discuss the potential implications of these results for mathematics education and the STEM agenda. (Contains 7 notes, 4 figures and 7 tables.)