The Academic Performance Index is computed for all California schools
based on standardised testing of students. The data sets contain
information for all schools with at least 100 students and for various
probability samples of the data.
Usage
data(api)
Format
The full population data in apipop are a data frame with 6194 observations on the following 37 variables.
cds
Unique identifier
stype
Elementary/Middle/High School
name
School name (15 characters)
sname
School name (40 characters)
snum
School number
dname
District name
dnum
District number
cname
County name
cnum
County number
flag
reason for missing data
pcttest
percentage of students tested
api00
API in 2000
api99
API in 1999
target
target for change in API
growth
Change in API
sch.wide
Met school-wide growth target?
comp.imp
Met Comparable Improvement target
both
Met both targets
awards
Eligible for awards program
meals
Percentage of students eligible for subsidized meals
ell
‘English Language Learners’ (percent)
yr.rnd
Year-round school
mobility
percentage of students for whom this is the first
year at the school
acs.k3
average class size years K-3
acs.46
average class size years 4-6
acs.core
Number of core academic courses
pct.resp
percent where parental education level is known
not.hsg
percent parents not high-school graduates
hsg
percent parents who are high-school graduates
some.col
percent parents with some college
col.grad
percent parents with college degree
grad.sch
percent parents with postgraduate education
avg.ed
average parental education level
full
percent fully qualified teachers
emer
percent teachers with emergency qualifications
enroll
number of students enrolled
api.stu
number of students tested.
The other data sets contain additional variables pw for
sampling weights and fpc to compute finite population
corrections to variance.
Details
apipop is the entire population, apisrs is a simple random sample,
apiclus1 is a cluster sample of school districts, apistrat is
a sample stratified by stype, and apiclus2 is a two-stage
cluster sample of schools within districts. The sampling weights in
apiclus1 are incorrect (the weight should be 757/15) but are as
obtained from UCLA.