How an Eighth-Grade Civics Class Helped Reverse the Last Conviction in the Salem Witch Trials

From NY Times Learning - you may find this interesting/useful

Lesson Plan: How an Eighth-Grade Civics Class Helped Reverse the Last Conviction in the Salem Witch Trials
Students will learn about the power of civic action to achieve justice — even 329 years later. Then, they will propose their own plan to rectify a wrong in their own community.

This actually happened in North Andover, just up the road!