In previous years the Trust has followed the spirit of the mandatory School Admissions Code which does not allow sibling priority in schools where all places are allocated on the basis of highest scores achieved in the admission Test. Presumably the Trust now sees the criterion of attendance at one of its primary schools, as enabling it to ignore this rule for Rochester Grammar (RGS), so still allowing it to select most girls on high scores.
First priority (as for all schools) if the proposals are implemented after the current Consultation would be grammar qualified Looked After Girls (see criteria for details of all categories), followed by: girls with a sibling at a local Trust secondary school: then girls attending Trust primary schools: girls who are children of staff employed by the Trust; health reasons (very difficult to justify); and finally rank order according to scores in the Medway Test.
The previous musical ability priority which from memory used to admit up to 10 girls, but has shrunk to two by 2018 admission, is now to be removed.
Many grammar schools are responding to the government priority towards children on Free School Meals or Pupil Premium, but this appears to be a step too far for TSAT at present.
The three secondary schools offering priority are RGS, Holcombe Grammar, and Victory Academy. The last named school has had a very difficult history since its opening in 2010 as Bishop of Rochester Academy, but with a good OFSTED in October: “This is a rapidly improving school, due to strong leadership and effective support from the Thinking Schools Academy Trust”, along with strong GCSE results.

This is a super-selective school and I am too often contacted by families of RGS girls seeking advice where their children are having difficulty in coping with the academic and social pressures of the school; although all will have provided evidence of high performance in the Medway Test. The new proposals are going to require a sea change in the school ethos if the potential new intake is to be welcomed and enabled to succeed. For it will comprise girls who have not achieved the cut off score, including some who will have scraped a pass. Alternatively, they may of course be put off by what they find, as happens each year to some potential applicants who decide to go elsewhere.
I suspect, at least in the first few years of the new proposals, the majority of the new type of intake will come from siblings of pupils already in one of the Trust secondary schools especially RGS itself, who would not have qualified under the high scoring criterion. The cut off score will inevitably be forced higher by these changes, with fewer places (I guess some 20 less) available for high scorers.

The Rochester proposal further weakens the case for co-education at Holcombe, one of whose key arguments was that some girls from the Trust primary schools were disadvantaged by not being able to attend a Trust grammar, which is now a false argument, but also because RGS will admit even more local girls, with fewer left potentially for Holcombe..
The school appears to thrive on controversy, most recently unlawfully keeping out seven pupils it had offered places to, a decision wrongly supported by Medway Council, in view of its illegality. Headteacher Juliet Diaz retired at the end of last term.
Also last year the school came up with the unlikely arrangement to admit girls from the non-selective Victory Academy full-time in various age groups, whilst remaining legal (?) by retaining them on the Victory roll. Not surprisingly, the girls found themselves in a difficult social environment and all appear now to have returned to Victory with the scheme quietly dropped.
Meanwhile the Regional Schools Commissioner is still considering the proposed co-educational scheme nearly a year after submission. One can only conclude that he is examining the major flaws in the proposal such as those I have pointed have out. He can now add to these flaws with the RGS proposals providing even more places for local girls than in previous years, undermining the case for co-ed even more sharply. Not surprisingly, Holcombe is one of just two Medway secondary schools that have not yet submitted proposals for change to its admission rules where required!