BROOKLYN - Parents and teachers are rallying outside a Park Slope school as the controversy continues over the state's Common Core testing. 

Protesters from P.S. 321 say they're extremely dissatisfied with the English Language Arts exam, which just wrapped up after three days of testing. 

The principal even put out a memo to parents saying that the test had inappropriate content, and is an insult to the teaching profession. She added that the children worked incredibly hard, despite it being the worst assessment of reading comprehension she has seen. 

The standardized tests caused an uproar at schools throughout the state this week, with some parents choosing to opt their kids out completely.