KIPP said it would not change its existing policy of training new principals in a yearlong school leadership program.

To date, Sapientis has trained nearly 500 teachers, principals and education community members.

The centerpiece of the academy's work is a yearlong program to train aspiring principals, which takes up 69 percent of its budget.

He will teach graduate courses in the N.Y.U. educational administration department and help develop programs to train school superintendents and principals.

Mayor Michael R. Bloomberg started the New York City Leadership Academy, a privately financed program to train principals.

In the same memo, he proposed 10 names of people in a district program, created to train future principals, who he thought could fill the jobs.

It would create weapon-free school zones, increase penalty for firearms possession, and develop new programs to train teachers and principals in conflict resolution and mediation.

The Leadership Academy has trained existing principals and matched other new principals up with mentors.

Mr. Klein also said he was thinking of training new principals by having them shadow experienced mentors.

From 1998 until January 2003, she directed the Baruch College Aspiring Leaders Program, which also trained principals.