Adoption analysis covers 50 percent of principals (n = 866) present at initial implementation
Sample (n = 866 of 1746) · All principals who completed the survey and received a weight (weighted to national K-12 public school principals/schools)
we focus on the 50 percent of principals in our sample (n = 866) who said they were at their current school for that school’s initial implementation of BTAM
cite page 54 Ch 7: Why Did Schools Adopt Specific BTAM Models?