In Kenya, the subjects that students choose in secondary schools greatly determine their career paths. This is because the subjects done at secondary schools dictate the courses they do at the post-secondary level of training. Studies show that majority of students are not aware of their career choices while in secondary schools hence they find themselves in the subjects they do either accidentally, or by being greatly influenced by other external factors other than career awareness. It is therefore paramount that subject choice guidance to students, if incorporated in career guidance programme to a great extent can help to solve the problems of students landing in wrong careers because they did not choose the right subjects while in secondary schools. This study sought to determine the extent to which the subject choice is incorporated in to career guidance programmes in secondary schools in Uriri Sub-County. The study employed ex-post facto research design. The target population in the study was 262 form three Agriculture students. 152 Agriculture students were drawn by proportionate stratified random sampling. A closed ended questionnaire was used to collect data. Data was analysed using SPSS package version 22 and presented and analysed using frequencies, percentages, means and standard deviations. The study found out that information on subject choice was available to a large extent, sufficient to help secondary school students in Uriri Sub-County to make informed career choices.