It will take place on Saturday, October 1, from 10am to 12.30pm and there will be an ice-cream van on the site too.
Money raised will go towards an outdoor learning environment project.
The school is also raising funds for another playground scheme which should get under way next year.
The fee for sellers is £10 and there will be an entry fee of £1. If you would like to reserve a pitch please call 01825 762336.
The entrance for sellers will be via Belmont Road and for buyers will be via Luxford Field gate.
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