An Objective Structured Teaching Exercise (OSTE) is a variation on the traditional OSCE, where participants practice and/or demonstrate their teaching skills. In an OSTE, actors play standardized learners (SLs), rather than (or in addition to) SPs. OSTEs aimed at providing practice and formative assessment of teaching begin with a brief didactic orientation session to prepare participants for the scenarios. Next, participants enter a room with an SL and engage in a teaching scenario. Immediately following the scenario, participants reflect on their own performance, and the SL provides feedback to the participant. Sometimes, faculty or peer observers share their feedback as well. Often a group debriefing follows the scenario(s). Like OSCEs, OSTEs can also be videotaped for later review, providing additional opportunities for reflection and self-assessment. Best practices for OSTEs include creating authentic, realistic cases; clarifying the learning skill(s) being assessed; doing a robust needs assessment; attending to logistical details; planning a thoughtful debriefing; and being prepared for last-minute changes.