That happened when I was in second grade. I don't remember duck and cover under a desk, but we had to march single file out into the hallway and stand against the wall.
I remember watching the animated PSA announcements about "Duck and Cover" but I don't recall any actual drills. I do remember the Civil defense alarms blaring the first Saturday of every month at noon though.
Remember the build up around the military base we would go to in October of 1962.
I would have been 10 years old, living in Florida and the news would tell us about how the Russians
were aiding the Cubans with missles.
Dad was in the Navy, dealing with Nuke submarines.