How are judgements for all-age school inspections made where there are inconsistencies in the performance of the primary and secondary phases?

The overarching principle is that inspectors will consider the balance of strengths and areas for improvement across all key stages. 
When analysing performance information, inspectors should give more weight to those analyses that present comparisons with similar schools. 
Information gathered from the analysis of performance information will always be triangulated with evidence from scrutiny of pupils’ work and lesson observations.