This article describes the PDS partnership between George Mason University and Daniels Run Elementary School, which are located in Fairfax, Virginia. In the spring of 2020, during their fifth year together, the partnership was awarded the National Association of Professional Development Schools Exemplary PDS Award. The Mason PDS program structure as well as the unique features of this university-school partnership are described. The Mason/DRES partnership's shared mission includes a school/ university culture committed to the preparation of future educators centered around active engagement in the school community (NAPDS Essential #2) as well as a shared commitment to innovative and reflective practice (NAPDS Essential #4). The partnership's inquiry focus results in ongoing and reciprocal professional development for all stakeholders (NAPDS Essential #3) and engagement in and public sharing of the results of teacher inquiry (NAPDS Essential #5).