Letter from Africa: Were South African school hair rules racist?

In our series of letters by African journalists, Nigerian novelist and writer Adaobi Tricia Nwaubani questions whether a South African school's hair rules really were racist.

As I followed the recent protests at a South African girls' school where students insisted on being allowed to wear afro hairdos to school, I recalled my own days as a student in what used to be one of Nigeria's most prestigious boarding schools for girls.
In contrast to South African school hair diktats, at the Federal Government Girls' College in Owerri in south-eastern Nigeria, straightening your hair was banned.
At unannounced intervals during the term, one of the school's matrons conducted an inspection of each girl's hair, then ran a sharp pair of scissors through any locks that she suspected of being chemically treated.
The consequence of rebelling against the school's hair rules was a shaved head. All hair gone. Case closed.
Despite this drastic action against straightened hair, we were not allowed to wear our hair in afros. Neither were we to hold our hair up in a bun.
Hair was supposed to be natural, but it had to be either short or plaited.

My school didn't have any 100% white students, but those of mixed race were also not allowed to leave their naturally soft and silky strands flying loose.
Like the rest of us, they were required to keep their hair in check.

'School life is about unpalatable rules'

I wonder if the Pretoria High School for Girls had similar straightforward intentions as the authorities in my former school did.
Were they being racist or just overly disciplinarian?
A study of the school's Code of Conduct document shows certain restrictions to what every student can do to or with their hair, irrespective of race.
It says:

• All hair must be brushed
• If hair is long enough to be tied back, it must be tied back neatly in a ponytail, no lower than the nape of the neck
• Pony tails may not be visible from the front
• All hair must be off the face and not be in the eyes
• Hair buns must be tight with no loose hair and have to be worn in the neck and not on top of the head."