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 Post subject: 85th percentile
PostPosted: Tue Oct 06, 2009 3:55 pm 
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Our preferred grammar school anticipates that out of catchment children will need to be in the 85th percentile. Does anyone know what this equates to as a score 250? 255? Is the highest 280?


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 Post subject: Re: 85th percentile
PostPosted: Tue Oct 06, 2009 4:03 pm 
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ourmaminhavana wrote:
Our preferred grammar school anticipates that out of catchment children will need to be in the 85th percentile. Does anyone know what this equates to


Sorry no.

:roll: :roll: parenthood :roll: :roll: I remember when percentiles only referred to how many ounces they had gained :cry:


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 Post subject:
PostPosted: Tue Oct 06, 2009 4:06 pm 
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Location: East Kent
it will depend on what scores all the other children get, it just means that 15 percent of the cohort were that score and above


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 Post subject:
PostPosted: Tue Oct 06, 2009 4:09 pm 
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Thanks for your quick reply. I knew that it meant in the top 15 percent, but thought that the figures equated to a certain proportion gaining a certain mark within the range too, but now I understand that it refers to a variable score depending on the cohort, I think... :oops:


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 Post subject:
PostPosted: Tue Oct 06, 2009 4:22 pm 
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the more I think the more confused I get....

I may have to give up!


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 Post subject:
PostPosted: Tue Oct 06, 2009 5:59 pm 
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If this is a normal standardisation against the cohort and there were 2 papers, then this would be typically 232 and above (116 usually being the 86th percentile). But of course you will not know what this equates to in terms of raw scores.


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 Post subject:
PostPosted: Tue Oct 06, 2009 6:06 pm 
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KenR wrote:
If this is a normal standardisation against the cohort and there were 2 papers, then this would be typically 232 and above (116 usually being the 86th percentile). But of course you will not know what this equates to in terms of raw scores.


Surely it would depend on whether the school meant
a) a score above the 85th percentile
b) to be in the 85th percentile of children

and whether the scores given on the OP were standardised.


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 Post subject:
PostPosted: Tue Oct 06, 2009 6:54 pm 
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Thanks very much Ken. That's exactly what I wanted to know. I appreciate that this doesn't help you to know the raw scores.
They need to be in the 85th percentile or above.
So with two papers what is the top 260? 280?


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 Post subject:
PostPosted: Thu Oct 15, 2009 5:08 pm 
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In Lincs the score is 282...the highest you can get.
Based on 2008 results our son's score of 249 puts him in top 9%ish.
Don't know about this year though.Hope that helps?


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 Post subject:
PostPosted: Thu Oct 15, 2009 5:32 pm 
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http://www.emie.ac.uk/research-areas/assessment/age-standardisation.cfm

100 50%
104 60%
108 70%
113 80%
115 85%
120 90%
125 95%
140 >=99%

Over two tests... twice the score...

e.g. 240 over two tests.... top 10% of tested.

So... for example... if a local school offers to pupils >232 (two tests)... they are offering to approx the top 14% (86%-tile)


Quote:
Based on 2008 results our son's score of 249 puts him in top 9%ish.

By my calculations 249 (out of 140x2, std dev 15, mean 100) gives... top 5%. :lol:

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