I just thought of something too 
Our DC go to a state school. It is an outstanding school and has been judged to be so by OFSTED for over a decade. It is fairly large (1600 plus pupils) and rural. I post this in case it is relevant.
Each year, there is a large agricultural show nearby. Many of the kids have some form of agricultural background. For the duration of the show, the pupils that are involved in the show are given authorised absence to attend.
I wish I could find the email allowing my DD to attend, but it clearly stated that this was a policy that was arrived at with the full involvement of the LEA, and extended to any of the other schools in said LEA that would have pupils involved and recognising the benefit and relevance to their lifestyles.
This doesn't affect just a handful of pupils, a significant number of kids attend. The school attendance is vastly reduced during that week.
Our DD, it is fair to say, did work hard at the show, it involves a lot of graft but also had a fair amount of time shopping the various stands with her mates too 
I know it's not quite the same, but I thought the school and particularly the LEA stance was interesting. This is a successful LEA too.