The main aim of this study was to see the perceptions of female teachers of secondary schools about the relationship between class size and students learning outcomes. Variable Learning outcome (LO) was selected for comparing teaching in overcrowded classes versus small-sized classrooms. Primary data were collected from the same teachers who had the experience of teaching both overcrowded classes and small-sized classes. For overcrowded classes, it was hypothesized that teachers could very effectively achieve the targeted learning outcomes in small classes, whereas it is quite challenging for the overcrowded class teachers to achieve the targets. Reliability tests were carried out to check the consistency of the answers from respondents. The test Cronbach's alphas yielded acceptable to very good range. Learning outcomes (LOO) 4.04, Learning outcomes (LOS) 4.72. These results were further checked and reinforced through the use of One-sample t-tests. The majority of the same teachers, on the basis of the same statistical tests, have expressed that smallsized classrooms are relatively more appropriate for teaching.