Middlesex Sheriff Peter J. Koutoujian congratulated almost 150 graduates of the Youth Public Safety Academy primarily from Cambridge, Hudson, Tyngsborough and Waltham during a ceremony at Chelmsford High School on Aug.16.

The ceremony was the final of six such graduations planned for this summer.

For six weeks each summer, the Middlesex Sheriff’s Office offered students ages 8-12 from Middlesex County communities the opportunity to participate in educational activities alongside members of the sheriff’s office as well as their local police and fire departments.

“This is the 20th year we have hosted YPSA, and every year we see the positive impact it has on youngsters across the county,” said Koutoujian.

“Cadets at this camp learn lifelong skills in areas like fire safety and emergency preparedness, but just as importantly they foster bonds with their community officials in a way that keeps that educational curiosity alive far beyond one summer.”

For information, visit http://middlesexsheriff.org/community.