Welcome Mits,http://www.buckscc.gov.uk/education/sch ... ueUObTLeM8
If you are unsuccessful in a selection review and you still wish to pursue your preferred grammar school, you have the right to appeal before an IAP once you have received your school allocation. However, you should be aware that the Independent Appeal Panel is restricted by the School Admission Appeals Code of Practice to consider only whether your child's review was carried out in a fair, consistent and objective way. Only if there is no evidence that this has been done, can the panel go on to satisfy themselves that there is evidence to demonstrate that your child is of the required academic standards for grammar school.
At the bottom of the page there is a timetable which states the appeal request should be received by 31st of March.
The Bucks guidance for appeals (2013) can be found here (pdf) http://www.buckscc.gov.uk/media/891226/ ... _guide.pdf