Undergraduate field experiences (UFEs) are a prominent element of
science education across many disciplines; however, empirical data
regarding the outcomes are often limited. UFEs are unique in that they
take place in a field setting, are often interdisciplinary, and include
diverse students. UFEs range from courses, to field trips, to
residential research experiences, and thereby have the potential to
yield a plethora of outcomes for undergraduate participants. The UFE
community has expressed a strong interest in better understanding how to
assess the outcomes of UFEs. In response, we developed a strategy by
which practitioners can assess their UFE using an evidence-based,
systematic and iterative approach. This essay guides practitioners
through the steps of: identifying intended UFE outcomes, considering
contextual factors, determining an explicit assessment approach, and
using the information to inform next steps. We provide a table of common
learning outcomes and potential assessment tools, vignettes to
illustrate using the strategy, and suggestions for practical application
of the strategy. We aim to support comprehensive and aligned assessment
of UFEs, leading to more inclusive and reflective design, and ultimately
improved student outcomes. We urge practitioners to move towards
evidence-based advocacy for continued support of UFEs.