"It doesn't make sense to combine scores from two separate tests, " said Carolyn Callahan, a professor specializing in gifted education at the University of Virginia.

WSJ: New York City Gifted-and-Talented Program's Math Is Questioned

"The big difference is between potential talent and realized talent, " said Carolyn Callahan, a professor of education at the University of Virginia who specializes in gifted education.

WSJ: City Defends Gifted-and-Talented Program Policy

On what point can all experts in gifted education agree?

FORBES: Do You Have A Gifted Child?

Hunter College Elementary School, an elite public gifted program, operates outside the Education Department and has aligned its deadlines with private schools.

WSJ: Parents Take Gamble For Top School Slots

In addition, the education department will run a program for about 90 gifted rising eighth-graders called the Dream Big Academy.

WSJ: Donors Fund Summer Class in South Bronx

"Let's be clear: Just because they don't qualify for gifted and talented, doesn't mean they're not getting a high-quality education, " Mr. Walcott said.

WSJ: City Defends Gifted-and-Talented Program Policy

"I think similar principles apply in the gifted and talented process, " said Damon Hewitt, director of the NAACP Legal Defense and Educational Fund's education practice.

WSJ: Big Change in Gifted and Talented Testing