Friday, 27 May 2011

How to calculate an average point score

To calculate an average point score, you must first work out the equivalent point score for the national curriculumn level.  The following table lists the point score equivalences for the main levels.
LevelPoints
W3
19
2c13
2b15
2a17
321
427
533
639
745
851

An easy way to remember how to calculate a point score, for the numerical levels, is to multiply the level by 6 and add 3.  For example, to work out a point score for level 4 you first multilpy 4 by 6 to get 24 and add 3 to get 27.

Worked example:
Chris achieved a level 2b in Reading, a level 1 in Writing and a level 3 in Mathematics in the Key Stage 1 assessments.

The equivalent point scores can be identified using the table above:
2b = 15
1 = 9
3 = 21

We now add the point scores together to get the total point score: 15 + 9 + 21 = 45

Dividing the total point score by the number of pupils gives us the average point score for Chris: 45/3 = 15.0

The same methodology can be applied to a cohort of children (e.g. Free School Meals), a particular subject or the entire National Curriculum year - you still work out the equivalent point scores, add them up and then divide by the number of subjects and/or children.

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