Project PLACE studied second grade elementary students of high-poverty communities as they were introduced to project-based learning (PBL) curricula in social studies classrooms. 80 lessons were taught over the period of one year, with this experiment designed to reflect realistically the professional development school districts offer and PBL lessons adhering to state educational standards. Results reflect a significant student improvement in social studies and informational writing, narrowing the performance gap between students of high-poverty communities and those of greater socio-economic status. The researchers of this study conclude that PBL can raise student achievement in high-poverty communities.
Source: Duke, N. K., & Halvorsen, A. (2017, June 20). New Study Shows the Impact of PBL on Student Achievement. Retrieved from https://www.edutopia.org/article/new-study-shows-impact-pbl-student-achievement-nell-duke-anne-lise-halvorsen