TESOL programs and courses around the world are increasingly offered partly or wholly online. Online instruction offers both new affordances and distinct challenges for effective instruction, particularly when it comes to supervising fieldwork. This article compares 2 distinct online formats for student reflections on their tutoring experiences in the practicum component of a course on teaching second language reading. In particular, the article examines how 2 different reflection formats afforded qualitatively distinct student reflections on how they modified their understandings of learning, learners, teaching, and the contexts of learning through (a) interacting with their tutee, (b) implementing new instructional practices, and (c) interacting with their peers about their tutorial. Findings are discussed in terms of the affordances and challenges provided by distinct ways of configuring the online reflection for these field experiences, comparing student work in blogs, discussion boards, and reports submitted individually to the instructor.