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Table 3 Summary statistics, data from 2007 SASS

From: How do teachers respond to tenure?

Teacher demographics Mean Min Max Std. Dev.
Age 37.88 20 76 0.16
White 0.90 0 1 0.01
Male 0.23 0 1 0.01
Teaching Year 3.34 1 7 0.03
Salary $42,175 $15,000 $110,000 $10,945
School Characteristics     
Student-Teacher Ratio 14.61 1 83.3 0.09
Free Lunch Percentage 0.43 0 1 0.01
District Characteristics     
Expenditures per Student $11,878 $4,899 $69,203 $115
Collective Bargaining Agreement 0.53 0 1 0.01
Outcomes of Interest     
Work Hours 53.30 30 80 8.71
Own Money Spent $422.86 0 $9000 $8.44
Professional Development 0.88 0 1 0.01
Communication1 0.84 0 1 0.01
Job Security Worry2 0.34 0 1 0.01
Coach a School Sport 0.18 0 1 0.01
Serve as a Curriculum Specialist 0.09 0 1 0.01
Serve on a School or District Committee 0.51 0 1 0.01
Sponsor a School Club 0.37 0 1 0.01
Total Observations 15,650    
  1. Note: Sample sizes rounded to nearest 10 for NCES confidentiality purposes.
  2. 1) Dummy variable is defined as 1 if a teacher uses any of the following to communicate with parents or students outside of the regular school day: e-mail to send out group updates, e-mail to address individual questions or concerns, online bulletin board, course or teacher web page, course or teacher blog, instant messaging (IM).
  3. 2) Teachers are asked if they agree or strongly agree with the following statement “I worry about the security of my job because of the performance of my students on state and/or local tests.