Participatory science programs advance knowledge at scales and resolutions where data collection by scientists alone is not possible due to time and resource constraints. Participation increases the number of data collectors while subjecting data collection protocols to a wide range of interpretations. Consequently, careful consideration in program design and data handling is necessary to maintain a high standard of data quality. The Phragmites Adaptive Management Framework (PAMF) is a participatory science program that uses adaptive management to reduce uncertainty in non-native Phragmites australis management throughout the Great Lakes basin. PAMF’s design helps ensure high quality data input through comprehensive participant trainings, standardized data collection protocols, and online data entry. Once submitted, the data are subjected to a rigorous quality control process. This thoughtful design maximizes participants’ contributions to PAMF.