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The New Leaders Aspiring Principals Program Has Three Core Features

• The New Leaders program to prepare high-quality principals includes the following elements: selective recruitment and admissions, training and endorsement, and support for principals early in their tenures. Since its inception, New Leaders has set high, outcome-oriented standards; monitored performance against those standards; and modified the program as needed in response to the performance data.

New Leaders Works Differently with Each Partner District

• New Leaders began with three district partnerships in 2001 and added more in subsequent years.
• Partner districts vary widely in terms of their needs, concentration of New Leaders principals, access to other principal preparation resources, and their ability to fulfill the commitment to providing principals with a high level of decisionmaking authority.
• New Leaders has customized its approach in each district in response to district needs and conditions.

New Leaders Principals Affect Student Achievement in Their Schools

• Students who attended schools led by New Leaders principals experienced slightly larger achievement gains on average than similar students in schools led by non--New Leaders principals.
• The magnitudes of achievement effects varied substantially across districts. They also varied across principals.

A Variety of Factors Could Explain the Observed Relationship Between New Leaders Principals and Outcomes

• Most of the differences in principals' effects could not be easily explained by school or district conditions.
• New Leaders principals tended to rate their teachers as having lower capacity and their district working conditions as less adequate than other principals in their districts did.
• On average, New Leaders principals were slightly more likely than other newly placed principals to remain in their schools for three or more years.
• School and district conditions varied within districts, as well as across districts.