Teen uniform

It's not unknown for older schoolgirls to wear plain tights to school which with the plaid skirt she's wearing does rather work well and I suspect the school jumper is made for them as I don't think it's like the sow on school badges one had for your blazer.

As middlish teen school uniform one balance its a very good choice although it doesn't have the appeal of a traditional pinafore tunic aka Gymslip.