This slide deck is abridged from a presentation given at #CSUN14 titled "TVIs AT Proficiency and Communities of Practice". The work is in press (2014) and will be published in the Journal of Visual Impairment and Blindness. Image descriptions: Slide 3: Bar chart of general education classroom teachers' use of technology for instructional activities. 2000=53%, 2010=69% Slide 4: Bar chart of assistive technology (AT) use. TVIs (1998-2002)=41%; Students with visual impairments (2000-2005)=40% (school), 31% (home) Slide 5: Photo of 2 cliffs separated by a large boulder. A person stands on the boulder, looking out into the crevice. Symbolizes divide between tech development/innovations, and student use and classroom implementation. The TVI is the gatekeeper to AT use. Slide 7: Diagram of 2 circles with arrows pointing from one to the other. Circle 1: Identification with a community of practice; Circle 2: Assistive Technology Proficiency Slide 11: Screenshot 1 is of the Bookshare Mentors program; Screenshot 2 is of the Paths to Literacy homepage, from Perkins.