But not everyone is taking part, because some parents are having their children opt out.
Some Brooklyn parents feel standardized testing is not the only way to measure what kids learn in school.
"We're here to tell you that for us, education is not about raising test scores, it's about raising children," a parent said.
They are among a fast growing number of parents who are exercising their option to refuse to allow their kids to take the Common Core based exams.
"I don't believe in all the money that's being taken out of our children's schools and classrooms," said Kate Elliot, a parent.
The more difficult state exams, based on the more difficult Common Core curriculum and its standards have turned parts of the education world upside down, adding stress for parents and students. Charles Sahm, of the conservative based Manhattan Institute feels standardized testing has its place.
But with Common Core, some parents say enough is enough.
"A child could have perfect work throughout the school year; it doesn't make any sense," said Takiema Smith, a parent.