I would always suggest single science rather than double science for all the reasons listed already. I would like to know, however, if triple science (as mentioned in the original post) is the same as 3 single sciences or is just the equivalent in terms of the amount of work to 3 GCSE's. My sons school are about to drop the ACA double science award (equivalent to 2 GCSE's) and replace it with the OCR 21st century sciece course allowing children to choose between single, double and triple awards. My first assumption was triple science meant chemistry, biology and physics but a quick trip to the OCR website left me confused.
Patricia are you suggesting from your post that students get awarded single sciences from doing the double science award and then doing a bit more or do they end up with a triple science award or are they one and the same thing? Sorry for sounding so ignorant. It was so much easier in the good old days when you sat O level biology, chem and physics - listen to me I am starting to sound like my mother!!