Too easy or too tough?

Nora Hertel:

Some critics of the new Common Core standards embraced by Wisconsin schools feel they set the bar for students too high too early.
Tina Hollenbeck, a former classroom teacher and homeschooler in Green Bay, believes the standards require abstract thinking that’s too hard for children in kindergarten and first grade. “That would be a huge stress that’s coming for these kids.”
Tuyet Cullen, an eighth grade math teacher in Madison, notes that Common Core has children multiplying fractions in fourth or fifth grade. Before, this skill was not usually taken up until sixth grade.
“Are their brains ready for that concept?” Cullen asked. “If (the standards) aren’t developmentally appropriate, they’re going to be too hard.”
Others argue that the standards are too easy.