From this forum I understand out of catchment qualifying score was around 351-355 for AGGS.
That's not right. If we were talking about a boy and Altrincham Boys' Grammar School then you would be on the right lines. This is because Alty Boys, after admitting boys from a small catchment area whatever their mark, then allots the rest of its places to boys outside the catchment area on a highest score first basis. Hence why each year there is an out of catchment qualifying score in the range of 351-355.
However, you are looking at Altrincham Girls' Grammar. Alty Girls has a different admissions procedure. It has a much wider catchment area of 8 miles. All a girl has to do is pass the exam. It does not matter what score she gets*. The school first allots places to girls in catchment who have sisters already at the school, then to girls in catchment on the basis of how far they live from the school. Someone living 1 mile from the school will get in before a girl living 3 miles from the school. If there are places left after all qualified girls in catchment have been given places, the next category of girls admitted are those outside catchment with sisters already at the school. Only then will girls without sisters who live out of catchment be allotted places, in order of how close they are to the school.
* The only time score comes into Alty Girls is if there were two girls who tied for the last allotted place in terms of distance from the school. Let's imagine twins, one who scored 335 and one who scored 334. The twin scoring 335 would get the offer of the last place.
So, I was trying to understand what was the total marks, I assumed 450 i.e; 150x3 papers. so, if total mark is 450 then they must get 78-79% but if it is 400 then it stands at 88-89%. i could not find anything on school website regarding this, as one of you already mentioned.
Could anyone clarify the total marks?
This is where things get complicated. Each of the three papers counts for a third of the total score (even though the NVR is only 20 mins and the other papers are 50 mins each). Say the VR paper consists of 80 questions, each girl will get a score out of 80. This is called the raw score. Once all the scores are known they are standardised. In really simple terms this means that they are all compared with each other and adjustments are made to the scores to take into account the relative age of the girls taking the exam. Generally the younger girls taking the exam will be given an extra few marks. The raw scores are then converted into standardised scores. Again, in simplistic terms, a girl who achieved an average raw score might be given a standardised score of 100. A girl who achieved 76/80 which was the top mark in the paper might be given a standardised score of 141 (which is the highest standardised score achievable in this exam). Therefore, the girl will get an overall total score which is made up of 3 x standardised scores (from Maths, VR and NVR). The maximum mark is 423 (141+141+141). The pass mark is 334 (an average of 112+111+111).
The difficulty with this in terms of assessing your daughter's progress in practice papers is that you can't directly correlate the raw scores gained in them with the standardised scores achieved in the actual exams. (You never find out the raw scores gained in the exams - only the standardised scores.) For example, the maths paper might be really hard and your daughter might score only 55% in it. Yet, if all other girls score less your daughter would probably still get a standardised score of 141. Clear as mud?
I am hoping to attend the open evening and certainly learn more.
This is a really good idea. The headteacher usually holds a couple of talks during the evening in which she explains the process and there are always people around who will answer questions.
I am living in fallowfield area but would probably move towards West didsbury that needs to work out where I could move if so.
One question you could usefully ask at the open evening (if not before) is how far out in distance the last girl admitted in each of the last 3 years. This would give you some feel for where you might be safe to move to. However, I would counsel you that just because Didsbury makes it one year, doesn't mean it will the next.