When we were sec 3, we merged with another school, and they implemented a new uniform that did away with long pants. I recall this did not sit well with many of the guys as we had already been wearing long pants yet we had to switch to shorts. It was rather embarrassing as by that age, some of us had hairy legs and wearing shorts just made you feel more juvenile. I remember there was a petition to reinstate back the pants but to no avail.
Not sure how it is now but I suppose they have got used to it but it was awkward at the time.
0.02