maximum possible mark

[Chai]

It is this thread here.

http://www.elevenplusexams.co.uk/forum/ ... 15&t=28558" onclick="window.open(this.href);return false;

[moved]

The raw scores weren't posted for the over 400 standardised score - it was a comment in amongst the many pages of the scores thread.

4000 applicants for 1212 places in Essex and Southend, if the bipartite and semi selective schools are included, 240 places in Redbridge. A significant proportion of that 4000 were only using the exam as a back up/mock test for independent schools.

[aang]

Three standard deviations is said to represent 99.7% of a population. This equates to a score of 390. Only half the population is above the central point of 300, so 0.15% score above 390. Four standard deviations would be a score of 420, which includes 99.9% of the population.

0.15% represents 6 children out of the 4000 who took the exam, hence a bit pointless to go beyond a score of 390.

This calculation makes a few critical assumptions which may or may not be true:
1. mean overall standardised score is 300
2. one standard deviation is 30

It is speculation on our part as to whether these two assumptions are indeed valid, until CSSE provides information clarifying the situation.

[roger123geegee]

Thankyou "moved" thats the best answer.
It was a bit of an accademic question.

And to the other, for sure to reward the effort, just sitting the exam was an achievement.
Just trying to show the level of the reward matches the effort and the achievement.

[moved]

Two sources have now told me about a child with a score over 400, but as they are both in the same geographical location I think it may be the same child!

[Setanta]

Three standard deviations is said to represent 99.7% of a population. This equates to a score of 390. Only half the population is above the central point of 300, so 0.15% score above 390. Four standard deviations would be a score of 420, which includes 99.9% of the population.

0.15% represents 6 children out of the 4000 who took the exam, hence a bit pointless to go beyond a score of 390.

This calculation makes a few critical assumptions which may or may not be true:
1. mean overall standardised score is 300
2. one standard deviation is 30

It is speculation on our part as to whether these two assumptions are indeed valid, until CSSE provides information clarifying the situation.

Thie gist of what Moved has said is right. At the top end of the scale the marks are meaningless and they must choose some arbitrary cut off point : 2.5 standard deviations 2.4? Who knows? If you know your child is in the top half of those at Kegs in this one particular test at 11+ then that should be enough.

Only mistake I beieve in what she said is probably a typo. 115 for one standard deviation in each test area 110. so 3*145=435 would represent the top 0.3% of kids that took the test. Maybe 12 kids spread between 8 schools! Who cares?