Competence based curriculum have faced criticism from educationalist based on its tasking and resistivity to change. However, in Canada, Scotland and Finland its implementation has be stunning. The stakeholders in Kenya has raise concern about their preparedness coupled with criticism from section of the government complaining on lack of involvement of stakeholders. The objective of the study was to establish whether teachers’ attitude influences the implementation of the competence-based curriculum. Social constructivism theory was adopted. A descriptive survey design and correlation research design were adopted for the study. The target population of the study included 24 County support Officers (CSOs’), 52 headteachers, and 610 Grade 1 teachers. The sample size was 6 CSOs, 52 Headteachers, and 61 Grade 1 teachers. A saturated sampling technique was used to select all the 52 headteachers from 52 schools. Simple random sampling was used to select the schools and CSOs. A purposive sampling technique was used to select Grade 1 teachers in Kericho County. Data was collected using interview schedules, questionnaires, and an observation schedule. Quantitative data were analysed using descriptive statistics in the form of percentages, means, and standard deviation, while inferential statistics were correlated using Pearson product-moment correlation. Qualitative data were analysed thematically. The attitude of teachers had a positive impact on CBC implementation, with a correlation of 0.560 and a calculated value of 0.00 for the headteachers and 0.284 with a calculated value of 0.032 for Grade 1 teachers. The results of this study are important for the successful adoption of the competency-based program through the participation of education stakeholders.