This study sought to find out the predictive capacity independent variables on the retention of pupils with disabilities in mainstreamed primary schools in Bomet County, Kenya. The study adopted a survey research design. The target population consisted of 840 teachers. Yamane formula was used in getting a sample size of 271 teachers. The multi-stage sampling procedure was used. After collecting, coding and analysing the raw data, the study revealed information as follows: provision of appropriate instructional and physical resources significantly influences the retention of pupils with disabilities by 19.2 per cent and 42.1 per cent, respectively. The study findings indicated that there was evidence of a positive and statistically significant relationship between the provision of appropriate physical resources and the retention of disabled pupils (r = 0.828** p < 0.05). Similarly, there exists a positive and statistically significant relationship between the provision of appropriate instructional resources and the retention of pupils with disabilities (r = 0.842**; p < 0.05). Moreover, the findings indicated that there was strong evidence of a statistically significant and positive relationship between appropriate recreational resources and the retention of pupils with disabilities (r = 0.846**; p < 0.05). Finally, the findings indicated that there was strong evidence of a statistically significant and positive relationship between appropriate human resource skills and the retention of disabled pupils (r = 0.866**; p < 0.05). The study recommended that in-service training should be conducted for all regular teachers to enhance knowledge, skills and attitude toward special needs education.