Reporting your data back to the community you worked with is the hardest part of the job. You must do this in a timely fashion, with respect for your client, confidence in the data and with precision.
The two articles posted detail how this works, and how to think about it. In the image a Loyola student is helping a 6th grader create a paired sampling screen for dust where one wipe cleans the floor and in the second section the dust has been cleaned before sampling. The goal was to demonstrate graphing skills and have the students be advocates for dust cleanliness. The samples were blind so that we could not tell where they came. This was done to avoid triggering an event which might have the family evicted.