ABSTRACT
This study has attempted to find out an assessment of pupils learning achievement in English language in private and public primary schools in Ogo-Oluwa Local Government Area of Oyo State. It is descriptive survey research. It involved two primary schools in Ogo-Oluwa Local Government Area of Oyo State. Both private and public school were used as sample for the study. For the collection of data that researcher made use of self designed questionnaire and achievement test. The data was analyzed with the used of percentage method. Moreover, the result showed that both public and private school learn all aspect of English language except composition which is difficult for pupils in primary schools to write without guide. The subject of the study believed that both private and public primary schools have specialized teacher for the teaching of English but the teachers in public schools are lazy in teaching. This is the reason pupils in public primary schools do not perform better as textbooks and aids affect the performance of the pupils in public primary schools in the sense that they combined the use of English language and Yoruba language as a medium of instruction. This is not the case in private primary schools, English language is used except lesson on Yoruba language where they used Yoruba as medium of instruction.