ACER developed the Citizen Science (CSI) program with funding from the Ontario Trillium Foundation (OTF). TD Friend of the Environment Fund funded the implementation of this project. In spring and fall of 2017, CSI was launched at 4 Planting for Change (P4C) schools; John William Boich Public School, Humberview Secondary School, St. Joan of Arc Catholic Secondary School, and Oakville Trafalgar High School.

ACER has designed a citizen science training program with funding from the Ontario Trillium Foundation (OTF). The training is based on Participatory Action Research (PAR) in which the citizen scientists are concurrently acquiring knowledge, participating in hands-on stewardship, and conducting research. The training will take an individual through five levels necessary to become a community leader: observe and detect, measure and report, train a team, teach a group, and lead a community. There are 5 categories for citizen scientists to learn about; Ecosystems, Weather and Climate Change, Tree Monitoring and Protocols, Map Making and GPS, and Data Analysis and Reporting.