The school was said to be founded by a privateer for the Continental Navy (a pirate), which should indicate that the school was founded in the late 1700s. However, a sign indicates that the school was established in 1687.
At around the 31:30 mark, Jack (Jake Manley) realizes he needs to have "silence" as he reaches into the cage for the coin. The show's non-diegetic (outside of the in-scene source) music stops. However, there were no other sounds in the scene, so all that really happened, noise-wise, is that the soundtrack went quiet.