Skip to main content
Displaying 1 - 3 of 3
Working Paper

The Growing Segmentation of the Charter School Sector in North Carolina

Helen Ladd, Charles Clotfelter, John B. Holbein

Education Systems & Policies
Student Outcomes & Achivement
Working Paper

Algebra for 8th Graders: Evidence on its Effects from 10 North Carolina Districts

Charles Clotfelter, Helen Ladd, Jacob Vigdor

Education Systems & Policies
Student Outcomes & Achivement
Working Paper

The Aftermath of Accelerating Algebra: Evidence from a District Policy Initiative

Charles Clotfelter, Helen Ladd, Jacob Vigdor

Education Systems & Policies
Student Outcomes & Achivement