Despite being two months before the peak sales period for school uniforms, the grocer posted record figures for the period from June 4 to June 11.
'It is the biggest amount of school uniforms that we have sold in a week in the 16-year history of selling George value uniforms,' said an Asda spokesman.
Asda confirmed that sales of uniforms doubled compared with the same week last year and sales of school shoes, starting at£4.50, jumped 200 per cent.
The value school uniform includes a polo shirt, a vest, sweatshirt, underpants, a pair of socks, trousers or a skirt and a pair of black scuff-resistant shoes.
The grocer's ongoing price campaign includes an outfit costing£9.96 for children aged between three and six.
Last year, the price of school uniforms sparked an Office of Fair Trading investigation, which recommended the end of exclusive arrangements for stores to supply schools. Asda has led protests against schools forcing parents to buy uniforms at particular shops, generally independents, where prices are higher.