Hopefully you can find a solution and go ahead with your planned move and fresh start.
Unless in a densely populated city such as London or a very rural area with few schools it is unusual for every single secondary school in the LA to be oversubscribed.
I would be very persistent and phone the LA every few days to check if any places have become available and if one does then apply for a place immediately even if you haven't yet moved. There can be a bit of movement in the next few months with people declining places, appeal hearings and people moving out of the area.
Maybe you could also double check that you have been given the absolute correct information (that all schools are full) by making a freedom of information request to the council. This may give you more clarity on the admissions in your local area.
You could send a letter something similar to below (this a copy of a letter off a FOI submitted to my local council by a person that published their request on another public forum. I did not write it)
Dear *** Council,
Under the Freedom of Information Act 2000, please supply the following:
1 A list of all secondary schools in (insert area) and whether they were oversubscribed or not-oversubscribed on national offer day 2019 (1st March).
Please include each school’s Unique Reference Number (URN), DFE code, or address/postcode to allow us to identify each relevant school without ambiguity.
We define a school to be oversubscribed if, and only if, at least one on-time applicant was refused a place and the applicant did not receive an offer from any higher preference school.
If there were no refusals to on-time applicants - even if the school was unable to accept one or more late applications, or admitted over its published admission number - then we do not consider this school to be oversubscribed.
If you use a different definition of oversubscription, then please make this clear in the response.
2 The total number of places offered at each school.
Questions 3-5 apply to oversubscribed schools only:
3 The number of on-time applicants refused a place who did not receive a place at any higher preference school.
4 The admission criterion under which the last successful applicant was admitted.
5 The home-to-school distance of the last successful applicant, assuming distance was used to allocate this place.
Please include measurement units and whether this is based upon a walking/driving route, straight line/as the crow flies distance or an alternative measurement system.
Please always list all schools within the *** (insert area) Local Authority even if you are unable to provide all the requested information - simply mark the relevant values as ‘Not Known’.
Note:
If any of these dates differ - please align to the relevant secondary offer/deadline dates for your local authority.
• Secondary National Offer Day - 1st March 2019.
• On-time applications – submitted before October 31st 2018
• Late applications – submitted after October 31st 2018
Middle deemed primary schools (if present in your authority) may align with other primary education provider dates
If you feel that more information is required to interpret your answers to these questions, then please supply this information too.
Yours faithfully,
MayorMumbum