TY - JOUR T1 - Class Size and Students’ Mathematics Achievement of Senior Secondary Schools in Southwestern Nigeria AU - Olatunde, Y. Philias JO - The Social Sciences VL - 5 IS - 2 SP - 108 EP - 112 PY - 2010 DA - 2001/08/19 SN - 1818-5800 DO - sscience.2010.108.112 UR - https://makhillpublications.co/view-article.php?doi=sscience.2010.108.112 KW - Class size KW -academic achievement KW -senior secondary school KW -national policy KW -Southwestern Nigeria AB - The study found out the relationship between class size and student academic achievement in some selected secondary schools in Southwestern Nigeria. The study adopted the descriptive survey design and simple percentages were used in analysing the data. Two validated instruments (QMT and MAT) were used in collecting data for the study. The subject of the study was made up of 1750 senior secondary school students and 123 mathematics teachers selected from 2 secondary schools in each of the Senatorial districts in Southwestern part of Nigeria. The results showed that the performance of students in large classes was very low (23%) compared to those students in smaller classes (64%). There was difference in the performance of male and female students in either group. It was recommended that policy makers and government should ensure that more classrooms are built and number of students in a class should not be >30. ER -