Longitudinal research on youth in foster care is important, but often challenging to accomplish. To assist the field, a thorough description of the development of the SPARK (Studying Pathways to Adjustment and Resilience in Kids) project, a longitudinal research project on the mechanisms of resilience for foster youth and their caregivers, is presented. Authors explain the difficult task for researchers in accessing youth in foster care and suggest strategies for success. Recruitment approaches for foster youth and their families are also provided along with examples of effective techniques. Data collection concerns are discussed, and the authors provide recommendations for researchers to consider when asking youth sensitive questions. Finally, data collection on academic information from teachers and how the SPARK project works with the academic community to gain information on school functioning for youth in the project is described. Suggestions for methodology utilized in future research along with examples of innovative adjustments to typical research procedures are provided as guidance for how research on maltreated youth can be conducted.In the United States, the number of youth in foster care reached 408,424 in 2010 (US Department of Health and Human Services (DHHS), 2011). Unfortunately, the number of youth requiring removal from their biological parents and placement with alternative caregivers has not significantly declined over the past decade with just as many youth entering foster care as exiting in any given year (DHHS, 2011). Although clinical science can do little to effect change in the rate at which youth are placed in care, research can provide meaningful insights on the impact of foster placement on a child's well-being. Researchers have understood this priority as evidenced by the multitude of studies devoted to documenting and analyzing the mental health of the foster youth community (Oswald, Heil, & Goldbeck, 2010).Placement in foster care is not always a temporary outcome (Barber & Delfabbro, 2003); therefore research must be able to assess the long-term impact of both the precursors to care and the additive effect of the out-of-home placement. To this end, the present discussion is intended to provide researchers with a roadmap; an example of how longitudinal research can be conducted on an important but hard to access population. Using the SPARK (Studying Pathways to Resilience and Adjustment in Kids) project as an example, suggestions for recruitment, data collection, retention, and ethical considerations germane to research on youth and families in the foster care community are presented