The study aimed at providing information on English language teachers'rnattitudes towards and treatment of female students in mixed-sex EFL classroomsrnin selected government high schools in Addis Ababa. The research procedurernfollowed in the study included administration of a questionnaire to 10 female andrn30 male teachers teaching English in grades 9,10, and 11 and TeacherrnTreatment Inventory Scales to 120 male and 120 female students currentlyrnattend ing the forty teachers' language classes, and observation of 20 teachers inrnlanguage classrooms.rnA trial was made to investigate (i) the attitudes of English languagernteachers towards female students; (ii) how female students were treated asrncompared with male students; (iii) similarity and differences of teaching behaviourrnbetween male and female teachers, and (iv) the relationship that exists betweenrnteachers attitudes towards female students on the one hand and the actualrnclassroom treatment on the other.rnThe necessary data was collected from (i) the questionnaire; (ii) thernTeacher Treatment Inventory Scales and (iii) the classroom observation. Therndata obtained from these sources were analysed. The results of the analysis mayrnbe summarized as follows: Both male and female English language teachersrnhave positive attitudes towards female students and treat male and femalernstudents equally. It was observed that there was similarity between teachers'rnattitudes towards female students and the actual treatment in the classroomrninteraction. It was also found that there was no difference in the teachingrnbehaviour of male and female teachers especially in their attitudes towards andrntreatment of female students. The analysis showed that from the three TTl scalesrnsignificant differences were not obtained between male and female students'rnperceptions of teacher treatment.rnOn the basis of the findings, recommendations concerning furtherrnresearche are stated