[A] To start, states that gain approval to measure student growth will also be required to chart progress the old way, comparing this year's students with those of last year's. The Education Department wants to see that data to help determine whether char...

[A] To start, states that gain approval to measure student growth will also be required to chart progress the old way, comparing this year's students with those of last year's. The Education Department wants to see that data to help determine whether char...