ABSTRACT : Supervision of instruction is an effective tool that ensures quality curriculum delivery inschools, world over. Collaborative Peer Supervision (CPS), is a supervision approach, where, colleague teacherssupervise each other collaboratively, and has been found to positively impact on teacher effectiveness. InKenya, there is no official supervision approach that is exclusively used for supervising teachers of English insecondary schools. This article is based on the research study, which explored English Language Teachers`views about the usefulness of Collaborative Peer Supervision approach in enhancing Teacher Effectiveness inthe teaching of English Language in public secondary schools in Kenya.The study adapted the ConvergentMixed Methods Research Design. 286 teachers of English, who participated in the quantitative phase of thestudy were randomly selected, while 25 English Language and Library Departmental heads (HODs), werepurposively selected and took part in the qualitative phase of the study, totaling to a sample size of 311. Datageneration was carried out through researcher-developed Likert-Scale type questionnaire, and in-depth interviewguide. The Questionnaire was used to collect quantitative data, while in-depth interview guide collectedqualitative data. Both descriptive and inferential statistics were used to analyze quantitative data, whileQualitative data was analyzed thematically. The study revealed that, a significant positive relationship existsbetween teacher perception of CPS, satisfaction with CPS, and teacher effectiveness. Further, teachers ofEnglish perceive CPS as an effective supervision approach, which can enhance their teaching effectiveness. Thestudy strongly recommends the introduction of CPS as a complementary supervision approach for supervisingteachers of English in secondary schools in Kenya.
KEY WORDS:Teacher Perceptions, Collaborative Peer Supervision, Teaching of English Language