SCHOOLCHILDREN could be prevented from playing outdoors in warm weather because teachers fear being sued if they get sunburnt.As the summer months approach teachers are warning that they are in a no-win situation and may be forced to ban youngsters from running around the playground because of our “increasingly litigious society”.Unions say the rise of malicious allegations made against school staff means that teachers are advised not to apply sunblock to pupils, but this leaves them with a dilemma as children are exposed to the harmful effects of the sun’s rays….