The study evaluated the implementation of early childhood care development and education curriculum in the North-West Geo-Political Zone of Nigeria. Specifically, the study sought to evaluate the adequacy and standard of infrastructure, the standard and availability of resources including personnel and whether the early childhood care development and education programme has any influence on the academic performance of pupils at the primary educationlevel. Seven(7) hypotheses were formulated to find out significant differences in the opinions of the five groups of respondents.The total sample number of respondents was 392 made up of 146 Head Teachers,138 ECCDE Teachers,68 Supervisors of LGEAs,35 Supervisors of SUBEBs and five (5) Coordinators of UBEC. The selection of States was based on purposive sampling technique in which two (2) States out of the seven (7)States in the Geo-political zone were sampled. The education zones and LGEAs in the two (2) States were randomly sampled, as a result of which six(6) zones and six (6) LGEAsthat is, three(3) each from the twoStates were sampled respectively. The instruments for data collection were a questionnaire, observation and test. A total of 396 questionnaires were administered by the researcher and 392 copies were retrieved whiledatawere analysed using ANOVA, descriptive statistics,chi-square and t-test. Similarly, 5 centres were sampled for observation from each LGEA totalling 30 and the results were analysed using simple percentages. The research findings revealed that the ECCDE programme prepared children for primary education but there were inadequate instructional materials; human resources and health care;and with most of the centres facing teacher-pupils ratio challenges and the programme was partially implemented. Based on the findings from this study,recommendations were made that the ECCDEcurriculum should be simplified by breaking its contents into units of topics each with its appropriate teaching method for effective implementation; intensification of efforts by Governments to address pupils' over-population as the teacher-pupils ratio per class was far from the set minimum standard; fostering cordial relationship between quality assurance officials on one hand, and the ECCDE personnel on the other; and encouraging teachers to use the appropriate teaching methods when and where necessary for effective implementation of the ECCDE programme not only in the North-West Geo-political zone but the nation at large.