ps. for anyone interested there's some useful info on streaming in education here: http://www.teachingexpertise.com/articles/grouping-pupils-ability-127 http://

ps. for anyone interested there's some useful info on streaming in education here: http://www.teachingexpertise.com/articles/grouping-pupils-ability-127 http://www.teachingexpertise.com/articles/grouping-pupils-ab... One option not mentioned there is getting the top pupils to assist in teaching the others; thus providing mutual benefit (since you learn where the gaps in your knowledge are when teaching, leading to you getting a much better understanding by plugging those gaps)