Minimum n and Confidence Intervals: Proficiency and Exclusion of Special Education Students

Publication Date: 2005-09-26


The effect of varying confidence interval size and minimum n size for the special education subgroup on AYP determinations and student exclusion was examined using actual data from 5 states. Passing rates increased with minimum n size and confidence interval size, but exclusion rates increased also. The effect of minimum n size was projected to attenuate somewhat with the change to all-grade testing.



Mary Ann Simpson , Brian Gong , Scott Marion

Publication Documents:

NCEOAYPReport05_SMBGMS.pdf  (Size: 818 KB)


Center for Assessment
Center for Assessment
Center for Assessment