Academic Language and Learning (ALL) is a relatively recent practice field known in Australian Higher Education as Academic Skills Advising or Student Support. Changing social, political and economic circumstances shape ALL work in complex and contradictory ways. Of crucial current significance are discourses calling for education to become an evidence-based practice. This paper outlines the main tenets of evidence-based practice discourses (EBPD); recapitulates Gert Biesta's critique of EBPD' views of education as instrumental technology and positivistic science; and explores how these critiques hold in the managerial expropriations of these discourses in the ALL context. The paper argues that, while these managerial expropriations ostensibly provide ALL with some legitimacy, they simultaneously reduce its practice to means-to-end interventions servicing the language/learning commodity; and increasingly consign its research to techno-scientific evaluation investigating managerial outcomes and acting as powerful panoptic surveillance. The paper calls for the continued critique of dominant discourses and their reproducing practices; and reconnecting with questions of educational purpose in ALL thereby enabling more radical and meaningful re-imaginings of this work.