star {mlmRev} | R Documentation |
Data from Tennessee's Student Teacher Achievement Ratio (STAR) project which was a large-scale, four-year study of the effect of reduced class size.
data(star)
A data frame with 26796 observations on the following 18 variables.
id
sch
gr
K
<
1
< 2
< 3
cltype
small
,
reg
and reg+A
. The last level indicates a regular
class size with a teachers aide.hdeg
ASSOC
< BS/BA
<
MS/MA/MEd
< MA+
< Ed.S
< Ed.D/Ph.D
clad
NOT
APPR
PROB
PEND
1
2
3
exp
trace
W
,
B
, A
, H
, I
and O
representing
white, black, Asian, Hispanic, Indian (Native American) and otherread
math
ses
F
and N
representing eligible for free lunches or
not eligibleschtype
inner
, suburb
, rural
and urban
sx
M
F
eth
trace
birthq
1977:1
< ... < 1982:2
birthy
1977:1982
yrs
gr
with Kindergarten
represented as 0. This variable was generated from gr
and
does not allow for a student being retained.tch
Details of the original data source and the process of conversion to this representation are given in the vignette.
http://www.heros-inc.org/data.htm
str(star)