yes,,if you are I/c then you will get a place...even if an o/c place available they first allocate it to an I/c candidate...good luck
I don't wish to be a wet blanket here, but my understanding of the two sets of allocations is that the 96 IC places can only go to IC candidates (in score order); but the other 24 places are allocated entirely on score, so could go to another 24 IC girls if they happened to be at ranks 97 - 120, 24 OOC girls, or a combination of both. This bit is on the CCHS website.
In that case, the place an IC candidate holds on the "IC" waiting list indicates that if only IC girls turn down places, after that many people drop out, a place is theirs. But if holders of any of the 24 "not IC" places turn theirs down, vacant places would be offered from the "all" waiting list in score order, not to IC girls first (unless they were the next in line). Unfortunately for IC girls, they don't go to the top of the "all" waiting list, hence the different rankings on the two lists.
The allocation of places is sort-of the other way round for the Southend and Westcliff schools, where the number of places reserved for IC candidates is a maximum, i.e. places within that number can be allocated to OOC candidates if there are no more IC candidates to take them, but "OOC" places would not be allocated to IC (at least, that is how the policy reads).