I work at a fairly small school, which is looking to publish their IB results by subject. We were sent a summary of results today by the career-driven, newly appointed, director of studies. 23 subjects (English A1, A2, Maths studies etc) along with a "points average" per subject. Incredibly the "averages" are to 2 decimal places. For those that aren't familiar with IB scores, each score has already been rounded to the nearest whole number. This is the first thing I?m going to point out. Possibly with an analogy with money: Jonny gets £3.62 a week pocket money. Let?s call it 4. Timmy gets £2.85 a week. Let?s call it 3. Eddy gets $6.78 a week. Let?s call it 7. Fred gets £1.45 a week. Let?s call it 1 Does this mean the average is (4 + 3 + 7 + 1)/4 = £3.75 a week??? Apparently it does. Interestingly the ?average? Maths Studies score is a 2.00 One student did it! What I would like to start quoting, is something to do with confidence intervals ? something I know nothing about. For all these results, we?re often talking about class sizes of 5 or 6. That?s 1 idea. But I?m sure fellow TESers have got some far better ones. Thanks in advance ? and please feel free to be as rude as you want. And by the way, why do I lose my line spacing why I post this?