SRI-Teknisk rapport-sen.v13 - DPU

D.4 Which country/countries are the individuals in
the actual sample from?
D.5 If the individuals in the actual sample are
involved with an educational institution, what type
of institution is it?
102
equal numbers of schools (~8% to 12%) within each
of the nine classifications
cells.
School sample for science and social studies
The final sample consisted of 103 elementary
schools (82 % participation) and 58 middle schools
(92% participation), for a total of 161 schools. Of
the 103 elementary schools, 87 were from the
initial 126 that were sampled, and of the 58 middle
schools, 44 were from the initial 63 that were
sampled. The remaining schools were from
the list of alternate schools for each classification
cell. This sample represented
schools from 22 of 24 systems or counties in Maryland,
and there were approximately
equal numbers of schools (~9% to 13%) within each
of the nine classification
cells. In summary, during the 2 years, 251 schools
participated in the
study.
Final sample for the study.
As a result of questionnaire nonresponse, the
linking of the questionnaire data to the mean scale
scores for schools reduced the sample sizes. The
final samples for this study consisted of 86 of 90
schools for mathematics and language arts (reading
and writing), 116 of 161 schools for science,
and 111 of 161 schools for social studies. The samples
for science and social
studies were reduced disproportionately more than
for the other content areas
because both teacher and student questionnaire
data were linked to science and social
studies MSPAP performance data (listwise deletion).
Less reduction in the
sample would have occurred if only teacher questionnaire
data were analyzed with
the science and social studies performance data.
However, student evidential variables
could not have been examined.
Implicit (please specify)
USA
Primary school (please specify)
elementary and middle school
Secondary school (please specify age range)
Coding is based on: Authors' description