I have a similar problem - one of the boys in my class is off on Friday and will therefore miss the science tests (yes, we are one of the 'lucky' ones). I called QCDA to find out options for him and was told that holidays do not count as exceptional circumstances and that if he was not available on the day he would not be able to take the tests (or at least have his scores counted). Your situation might be counted as different because he's away on the Monday and therefore could take his on the Tuesday but as there are already two papers on the Tuesday don't you think he would find it all a bit stressful? The percentages are such a joke - this year we have had an extra traveller child join us in the second half of the Spring term... He has only been in school once in the last two weeks and had a lot of absences in his first half term - he probably won't even be here to take the tests next week! And yet, he counts in all of our data! How is this a good measure of the school's performance? Not much we could do with anyone in half a term, especially when the child in question isn't actually regularly attending the school.