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Table 9 Mean number of reported college and professional development courses, by teaching status in 2007 and state NGSS adoption

From: Teaching evolution in U.S. public schools: a continuing challenge

 Teaching in 2007Began teaching after 2007
Mean number of college courses with evolution focus
 Non-Framework1.81.9
 Based on Framework1.91.9
 Adopted NGSS*2.21.9
 N501261
Mean number of college courses with some evolution
 Non-Framework3.01.9
 Based on Framework3.11.9
 Adopted NGSS3.11.9
 N466261
Mean number of professional development courses with evolution focus
 Non-Framework1.41.4
 Based on Framework1.71.2
 Adopted NGSS1.81.2
 N466251
  1. * Significantly different from teachers in non-framework states (p < 0.05)
  2. Significantly different from teachers in non-framework states only for high seniority teachers (interactions significant, p < 0.05)