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PostPosted: Fri Sep 18, 2015 2:23 pm 
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hello, I am trying to understand how the standardisation works..........in a simple way. It seems very complicated to me. How does the actual score work with the standardisation process...........I have nightmares thinking my DC would get a score close to Qualifying 121 and then fall off due to standardisation. If anyone could shed some light please. Tx :?: :roll:


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PostPosted: Fri Sep 18, 2015 2:48 pm 
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Awesomeanshi wrote:
hello, I am trying to understand how the standardisation works..........in a simple way. It seems very complicated to me. How does the actual score work with the standardisation process...........I have nightmares thinking my DC would get a score close to Qualifying 121 and then fall off due to standardisation. If anyone could shed some light please. Tx :?: :roll:


This topic has come up several times in recent months. If you search 'Stroller's' posts and within those, 'standardisation', you will find a good explanation with diagrams.

Essentially, the average raw score (ie the mean of the scores achieved by all the candidates) is given the value 100. Therefore, 50% of candidates will have a score on or above 100 and 50% below. The scores follow a 'normal distribution', with most scores falling around the mean.

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PostPosted: Fri Sep 18, 2015 2:54 pm 
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This is basically it.

http://www.elevenplusexams.co.uk/advice ... xplanation

It varies from school to school and area to area, but for most areas, they find what the average score is. Anyone getting that score effectively gets a standardised score (ss) of 100. If a standard deviation of 15 is used (this is the most common but not all use it) then approx 2/3 of the scores will be within one SD of the average, ie between 85 and 115.
Again if SD of 15 is used, the top 2% will score 130 and above and the top 1% score 133 or above.
There's a stats formula to work it out, which I think is included in The explanation in the link.
Age standardisation works by only comparing children with other children born in the same month.


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PostPosted: Fri Sep 18, 2015 3:38 pm 
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BTW the standardised score is a measure of how well one has done compared with others. It tells you nothing about the underlying raw score. An ss of 141 could represent 90% and above, or 50% and above. Also, it is not 'out of' 141 or whatever. On this forum, you will often see people stating that you 'need 82%' to get a place at soandsuch a school, because the standardised score required to pass is 115. Yes, 115 is 82% of 141 - just not in this context :shock: .

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PostPosted: Sun Sep 20, 2015 11:08 pm 
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Here's the link to the previous discussion, complete with diagrams.

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PostPosted: Mon Sep 21, 2015 8:37 am 
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Thank you all, much appreciate your input and advice. One more question - would we get to know the raw score of our DS?


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PostPosted: Mon Sep 21, 2015 10:41 am 
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Not when you receive the results. Bucks will just give a standardised score because that is frankly the only score that count.

I believe some DP have received them when appealing but not sure if this is the case for all counties.


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PostPosted: Mon Sep 21, 2015 1:25 pm 
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Thank you Tolstoy!


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PostPosted: Wed Oct 14, 2015 6:58 pm 
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If a 121 qualifying score is supposed to qualify about 30% of the children in Bucks, how does that fit with the explanation above? Under the 'normal' standardisation model, a score of 120+ would only be achieved by about the top 10% or so, wouldn't it?

A normal standardised score to qualify the top 30% of candidates would be around 110-112, wouldn't it? Anyone understand how that works?


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PostPosted: Wed Oct 14, 2015 10:27 pm 
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schlumpf wrote:
If a 121 qualifying score is supposed to qualify about 30% of the children in Bucks, how does that fit with the explanation above? Under the 'normal' standardisation model, a score of 120+ would only be achieved by about the top 10% or so, wouldn't it?

A normal standardised score to qualify the top 30% of candidates would be around 110-112, wouldn't it? Anyone understand how that works?


Standardisation against a national cohort, perhaps? Is your average Bucks child brighter than the average average child?

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