Since the inception of the school, few, if any aspects if the student life, has undergone frequent changes as often as the school uniform.  Over the years, the students mode of dressing to school or inside the school premises changed on more than three occasions.
When the school formally took off in 1934, attention was not paid to the type of dresses that the foundation boys wore to school.  They were permitted to put on their personal clothes.
By 1936, the use of brown khaki shirt over brown khaki pair of shorts had become law.   This lasted till 1950’s when the brown khaki shirt was replaced by white shirt while the brown khaki pair of shorts was retained until the days of Ijesa Comprehensive High School in the late-1960’s.   It now had to change to white shirt patterned with blue stripes over navy-blue pair of shorts for boys and stripped white blouses with blue skirts with or without pinafore for the girls.   Incidentally, when the Comprehensive High School reverted to its old name (Ilesa Grammar School), status, and glory, the adopted uniform of Ijesa Comprehensive High School days remained.   And that has been the school uniform till today.   Sometime, in the 1970’s the Higher School Certificate boys were allowed to wear pairs of trousers, but this privilege was short-lived.   This is probably not unconnected with the fact that the Tutors had a lot of problems coping with the arrogance of the Sixth Form boys.   And one way of cutting the boys to size was to remove this ego-boosting privilege of wearing pairs of trousers as school uniform!
The boy’s cap was worn by boys of the pre-independence days as part of the school uniform in and outside the school premises.   It was then the vogue and served as the better means of identify than the brown shirt and pair of shorts of that time.
The school cap, apparently, was one of the relics of colonialism which were done away with on Nigerian’s attainment of political independence in 1960 in Ilesa Grammar School.   The present and old students of the school do not appear to be eager to see to its re-introduction into the students’ garb now or in future.
While the wearing of shoes by boys was taken as luxury in the days of Rev. N.O.A. Lahanmi and Revd. Canon J. A. Akinyemi, it is unimaginable today to see a student of Ilesa Grammar School in school uniform within or outside the school premises without a pair of shoes on.
A visit to the school would reveal neatly dressed male and female students wearing beautiful uniforms with brown polished leather sandals with buckles or white canvas shoes.