S2 E10 - Chapter Twenty Three: The Blackboard Jungle
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Riverdale: Every Movie That Inspired The Episode Titles

23. S2 E10 - Chapter Twenty Three: The Blackboard Jungle
Blackboard Jungle (1955) - A war veteran takes a job at a school where hooliganism and criminality run rampant. On Riverdale, Southside high is shut down and the "hooligans" from Southside take up residence at Riverdale high.