Seasonality in Google Searches for “USSR”, “Soviet”, and “Cold War”

[IAmGraydon]

Any guesses as to why there is strong seasonality in searches for "USSR", "Soviet", and "Cold War"?

https://trends.google.com/trends/explore?date=all&geo=US&q=ussr,soviet,cold%20war

Delete the "Cold War" item to rescale for a better look.

[lwneal]

Often these seasonal patterns match up with yearly high school or college entrance exams, and are due to students studying the topics.

[IAmGraydon → lwneal]

Interesting. That would make sense. They drop off sharply every June, when summer break begins. Thanks for the input!