THE PROJECT STAR DATA SET
The Project STAR public access data set contains data on test scores, treatment groups,
and student and teacher characteristics for the four years of the experiment, from
academic year 1985-86 to academic year 1988-89. The test score data analyzed in this
chapter are the sum of the scores on the math and reading portion of the Stanford
Achievement Test. The binary variable “Boy” in Table 11.2 indicates whether the
student is a boy (= 1) or girl (= 0); the binary variables “Black” and “Race other than
black or white” indicate the student’s race. The binary variable “Free lunch eligible”
indicates whether the student is eligible for a free lunch during that school year. The
teacher’s years of experience are the total years of experience of the teacher whom the
student had in the grade for which the test data apply. The data set also indicates which
school the student attended in a given year, making it possible to construct binary schoolspecific indicator variables.
We have included two versions of the data set on the website. STAR_SW includes the
variables that were used in the analysis in Chapter 11. WEBSTAR constains the
complete dataset (which we downloaded from the Project STAR website
http://www.heros-inc.org/star.htm)
Data Series in STAR_SW:
Variable
tscorek
tscore1
tscore2
tscore3
stark
star1
star2
star3
sck
sc1
sc2
sc3
rak
ra1
ra2
ra3
black
white
boy
freelunk
freelun1
Description
test score kindergarten
test score 1st grade
test score 2nd grade
test score 3rd grade
attend project star class (small, regular or aide) in kindergarten
attend project star class (small, regular or aide) in 1st grade
attend project star class (small, regular or aide) in 2nd grade
attend project star class (small, regular or aide) in 3rd grade
in small class - kindergarten
in small class – 1st Grade
in small class – 2nd Grade
in small class – 3rd Grade
in regular class with aide – kindergarten
in regular class with aide – 1st grade
in regular class with aide – 2nd grade
in regular class with aide – 3rd grade
binary variable (1 if black)
binary variance (1 if white)
binary variable (1 if boy)
qualifies for free lunch kindergarten
qualifies for free lunch 1st grade
freelun2
freelun3
totexpk
totexp1
totexp2
totexp3
treadssk
treadss1
treadss2
treadss3
tmathssk
tmathss1
tmathss2
tmathss3
schidkn
schid1n
schid2n
schid3n
qualifies for free lunch 2nd grade
qualifies for free lunch 3rd grade
years of total teaching experience - kindergarten
years of total teaching experience - 1st grade
years of total teaching experience - 2nd grade
years of total teaching experience - 3rd grade
total reading scaled score - sesat ii stanford kindergarten
total reading scaled score - sesat ii Stanford 1st grade
total reading scaled score - sesat ii stanford 2nd grade
total reading scaled score - sesat ii Stanford 3rd grade
total math scaled score - sesat ii Stanford kindergarten
total math scaled score - sesat ii Stanford 1st grade
total math scaled score - sesat ii Stanford 2nd grade
total math scaled score - sesat ii Stanford 3rd grade
school id-k (new) kindergarten
school id-g1 (new) 1st grade
school id-g2 (new) 2nd grade
school id-g3 (new) 3rd grade
Data Series in WEBSTAR
Variable
newid
ssex
srace
sbirthq
sbirthy
stark
star1
star2
star3
cltypek
cltype1
cltype2
cltype3
schtypek
hdegk
cladk
totexpk
tracek
treadssk
tmathssk
sesk
Description
new student id for public star datasets
student sex (1m2f)
student race (1w2b3a4h5i6o)
quarter of students birth
year of students birth
attend project star class (small, regular or aide) in kindergarten
attend project star class (small, regular or aide) in 1st grade
attend project star class (small, regular or aide) in 2nd grade
attend project star class (small, regular or aide) in 3rd grade
classroom type (1s2r3ra) in kindergarten
classroom type (1s2r3ra) in first grade
classroom type (1s2r3ra) in second grade
classroom type (1s2r3ra) in third grade
school type - (1i2s3r4u) in kindergarten
highest degree (tch) of kindergarten teacher
teacher career ladder level in kindergarten
years of total teaching experience - kindergarten
teacher race (1w2b3a4h5i6o) in kindergarten
total reading scaled score - sesat ii stanford
total math scaled score - sesat ii stanford
socio-economic status in kindergarten
schtype1
trace1
hdeg1
clad1
totexp1
treadss1
tmathss1
ses1
schtype2
trace2
hdeg2
clad2
totexp2
treadss2
tmathss2
ses2
schtype3
treadss3
tmathss3
ses3
trace3
hdeg3
clad3
totexp3
sysidkn
sysid1n
sysid2n
sysid3n
schidkn
schid1n
schid2n
schid3n
school type - (1i2s3r4u) in first grade
teacher race (1w2b3a4h5i6o) in 1st grade
highest degree (tch) of 1st grade teacher
teacher career ladder level in 1st grade
years of total teaching experience - 1st grade
total reading scaled score - primary 1 stanford
total math scaled score - primary 1 stanford
socio-economic status in 1st grade
school type - (1i2s3r4u) in 2nd grade
teacher race (1w2b3a4h5i6o) in 2nd grade
highest degree (tch) of 2nd grade teacher
teacher career ladder level in 2nd grade
years of total teaching experience - 2nd grade
total reading scaled score - primary 2 stanford
total math scaled score - primary 2 stanford
socio-economic status in 2nd grade
school type - (1i2s3r4u) in third grade
total reading scaled score - primary 3 stanford
total math scaled score - primary 3 stanford
socio-economic status in 3rd grade
teacher race (1w2b3a4h5i6o) in 3rd grade
highest degree (tch) of 3rd grade teacher
teacher career ladder level in 3rd grade
years of total teaching experience - 3rd grade
sch system id-k (new) kindergarten
sch system id-g1 (new) 1st grade
sch system id-g2 (new) 2nd grade
sch system id-g3 (new) 3rd grade
school id-k (new) kindergarten
school id-g1 (new) 1st grade
school id-g2 (new) 2nd grade
school id-g3 (new) 3rd grade