If you want more information on how the scores are derived, look at the following thread and click on the linksviewtopic.php?f=15&t=17999
The CSSE guidance sheet indicates that a score of 353 will be in the green zone and highly likely to result in an offer at Colchester County High School for Girls. The cut-off for the yellow zone is indicated as 343 meaning any score below that is highly unlikely to result in an offer. Your DD score of 350.842 is relatively high and should
result in an eventual offer. However, all this is speculation and past performance is not a guarantee of the future. Nobody knows at this stage how many applicants will have CoCHS as their preferred choice, and the changes at Chelmsford County High School may affect CoCHS.
For 2013 entry, a DD with a score of 331 was eventually offered a place at CoCHS. (viewtopic.php?f=15&t=31060
) The guidance sheet had indicated the cut-off would be around 330 for the yellow zone and 353 for the green zone.
The theoretical maximum score last year for 2013 entry was 420.20. This would be based on someone getting every single question correct on every paper. The highest actual score that I heard of was nearly 410. I would bet a fairly large sum of money that no-one achieved a perfect standardised score in all three papers.
For 2012 entry, 575 parents put CoCHS as one of their options on CAF form for the 112 places, of whom 375 actually sat the 11+ test at CoCHS (Chelmsford County High School for Girls was still part of CSSE then so some girls would have sat the test there). For 2013 entry, 451 parents put CoCHS as one of their choices on CAF for the 112 places , of whom 387 sat the 11+ test at CoCHS. For 2014 entry, CoCHS admissions policy states that there will be 140 places available due to an extra class.
If you are attending the open session, then it might be worth asking how many girls sat the 11+ at CoCHS as this may provide an indicator of how 2014 entry compares to 2013 entry, although now that ChCHS are not part of CSSE, the figure may not be very useful, and the extra class works in your favour.
My advice would be to put the schools in the order of your actual preference. You are in a good position for Colchester County High School for Girls. Good luck !