In your authority the Headteachers' Manual states this year:
the LA will pre-populate the â€˜School Summary â€“ Selection Appeals, Year of Entry â€¦..â€™ sheet with the most recent SAT results for the school, and some contextual information (Acorn data) about the intake of the school.
The panel will therefore already know something about the context within which the school is operating, and the background against which curriculum results have been achieved.
Bearing in mind that preparation for the 11+ was officially limited to the familiarisation and practice papers, I think it's going to be much harder to attribute 116 to poor teaching than it would be to come up with an explanation if the situation were reversed (e.g. 126 and only one level 5 prediction). - Not that there would be any need for an explanation in the latter situation!