All of the Exeter High School staff was surveyed.
Population size:
178
Return rate:
131 = 74%
Confidence interval:
3.87
Confidence level:
95%
Confidence interval and confidence level explained:
We can be xx% sure that the true percentage of the population that would pick the same answer is + or – 3.87. For example: If 80% of the respondents selected “strongly agree” when asked if the current EHS facility is well maintained, we can be 95% sure that between 75.75% and 84.25% of all EHS staff would have selected this same answer.
From: http://www.surveysystem.com/sscalc.htm
About this survey:
The survey used in this research was developed by the
staff of "Education for the Future" based at California State
University, Chico. Education for the Future is directed by Dr.
Victoria Bernhardt who holds degrees in psychology and
statistics.
Well over one million surveys have been administered by the "Education
for the Future" staff. Additionally, school districts all over the
country have also administered this survey to parents, staff, and
students. "Education for the Future" does not provide reliability
or
validity statistics (although this information may be available in the
near future due to the popularity of the instrument) the questions are
based on sound educational research that identifies the characteristics
of high performing schools. Additionally, the "Education to the
Future" staff has continually monitored and improved the survey during
the last decade of use. For more information about "Education to
the
Future" please see:
http://eff.csuchico.edu/home/