How the AP-NORC Center poll was conductedAugust 19, 2013 @ 12:03 am
(AP) - The Associated Press-NORC Center for Public Affairs Research Poll of parents on education was conducted from June 21 to July 22 by NORC at the University of Chicago. It is based on landline and cellphone interviews with a nationally representative random sample of 1,025 adult parents of children enrolled in school between kindergarten and 12th grade in the 2012-13 school year. Interviews included 624 respondents on landline telephones and 401 on cellphones.
Digits in the phone numbers dialed were generated randomly to reach households with unlisted and listed landline and cellphone numbers.
Interviews were conducted in both English and Spanish.
As is done routinely in surveys, results were weighted, or adjusted, to ensure that responses accurately reflect the population's makeup by factors such as age, sex, education and race. In addition, the weighting took into account patterns of phone use _ landline only, cellphone only and both _ by region.
No more than 1 time in 20 should chance variations in the sample cause the results to vary by more than plus or minus 4.1 percentage points from the answers that would be obtained if all adult parents in the U.S. with children enrolled in kindergarten through 12th grade last school year were polled.
The survey was sponsored by the Joyce Foundation, which works to promote policies that improve the quality of teachers, including the development of new teacher evaluation systems, that enhance early reading reforms and that encourage innovation in public schools.
There are other sources of potential error in polls, including the wording and order of questions.
The questions and results are available at http://www.apnorc.org.
(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)
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