A thesis submitted in parial fulfillment of the requirements for the award of the degree " Licence en Langue et Littérature Anglaises.

Résumé,

The main purpose of the present study was to find out the impact of socio-environmental factors on students' oral fluency in English. In this study, three research questions were formulated.
The first research question sought to search the main factors affecting students' speaking performance. The second research question aimed at identifying the extent to which these factors influence students' oral fluency in English.

Finally the third research question sought to establish the relationship between students' family background and English language performance.
The study was carried out among 2nd Form Arts students and teachers in three secondary schools of Nyabihanga DCE. In this regard, forty two students and three English teachers were selected from three schools as participants. The data was collected through a set of both students and teachers' questionnaires, an oral test, and the classroom observation. Then, it was deeply analyzed and later, the researcher came up with results satisfactory good. The findings from the analysis of data revealed that there are a number of factors affecting students' oral fluency in English.
There include, based to the results, the lack of adequate supporting facilities, the non communicative home background in English, the lack of students' family motivation, unsupportive students' home environment, students' inability to express themselves orally, the poorly-equipped libraries, etc.

Finally, recommendations were addressed to different practitioners such as students, English teachers, schools, as well as the government.