I am not sure if LBR does give out that information, but it may be worth a try e.g. under a FOI request?
With regard to the marks, it may be necessary to slightly modify the marks required. As with IQ, rather than a linear type distribution, the marks are more likely to be a Bell curve
i.e. very few & tapered at either extremity, with a fat bunching in the middle.
The marks of late sitters are also subject to age standardisation
For example, if the first test is in September & the dc is born in the 6th month (from August to September) i.e. January, that is exactly in the middle.
If the second test is taken by the dc in February, additional age standardisation
applies i.e. 6+5 or 6 (months)=11 or 12.
Therefore the January born dc is treated instead as being August or September born!
(From past experience, the 2nd test was held 2 weeks before the March results in February.)
This is why I prayed that my September born DC did not fall ill, & have to take the test at a later date. Consider 12 + 5 or 6 = 17 or 18 months age-standardised
So age standardisation affecting already high raw scores shakes things up. How many angels on the head of a pin