Between 2013 and 2016, the American Institutes for Research led two projects funded by the Office of Career, Technical, and Adult Education (OCTAE) that focused on introducing OER to adult educators of math, science, and ESL. Within each project, teachers received targeted training to learn about OER and how OER can be used, created, evaluated, and shared. Some of these adult educators also engaged in a six month training of trainers. In an attempt to understand what happens after targeted PD ends, we followed-up with participants through an online survey and telephone interviews. This presentation will share the continued practice of adult educators as well as barriers they faced to sustain their use of OER. We will highlight participants' use of OER after the projects ended as well as their successes, the types of supports they need to continue using OER, and what, if any, student impact they have seen. We will also identify and discuss reasons why adult educators stopped using OER after participation in the projects and seek to understand what additional supports can be provided to educators to ensure continued use, development, and sharing of OER. This presentation will also include reference to tools and resources developed by the project for adult educators and OER developed by teachers for their adult learners.