PRESENTS THE report of the Coordinating Center of the Cooperative Rese
arch Program in First-Grade Reading Instruction. Data used in the stud
y were compiled from the 27 individual studies comprising the Cooperat
ive Research Program in First-Grade Reading Instruction relevant to th
ree basic questions: (1) To what extent are various pupil, teacher, cl
ass, school, and community characteristics related to pupil achievemen
t in first-grade reading and spelling? (2) Which of the many approache
s to initial reading instruction produces superior reading and spellin
g achievement at the end of the first grade? (3) Is any program unique
ly effective or ineffective for pupils with high or low readiness for
reading? The instructional approaches evaluated included Basal, Basal
plus Phonics, i.t.a., Linguistic, Language Experience, and Phonic/Ling
uistic. Identical information was gathered in each project concerning
teacher, school, and community characteristics and common experimental
guidelines were followed in all 27 studies. Results of the correlatio
n analysis revealed that the ability to recognize letters of the alpha
bet prior to the beginning of reading instruction was the single best
predictor of first-grade reading achievement. The analysis of methodol
ogy indicated that the various nonbasal instructional programs tended
to be superior to basal programs as measured by word recognition skill
s of pupils after 1 year of reading instruction. Differences between b
asal and nonbasal programs were less consistent when measures of compr
ehension, spelling, rate of accuracy of reading, and word study skills
constituted the criterion of reading achievement. The analysis of tre
atments according to level of readiness for reading revealed that no m
ethod was especially effective or ineffective for pupils of high or lo
w readiness as measured by tests of intelligence, auditory discriminat
ion, and letter knowledge. The research reported here was performed pu
rsuant to a contract with the United States Department of Health, Educ
ation, and Welfare, Office of Education, under the provisions of the C
ooperative Research Program.