Coca-Cola has been criticised for making a misleading claim in an ad in the US over its policy towards selling soft drinks in schools. While the company has agreed to change the wording in the ad, Ben Cooper writes, campaigners are set to ramp up the pressure on both Coke and PepsiCo over the issue of selling full-calorie soft drinks in schools in an attempt to force the companies to adopt globally consistent policies in this area.