They took ours when I was in third or fourth grade (so early 80's). They took us on a field trip to a police station and everybody lined up to have their finge

They took ours when I was in third or fourth grade (so early 80's). They took us on a field trip to a police station and everybody lined up to have their fingerprints taken - I don't know if they actually kept them or did anything with them, though.