Independent reviewer evaluations of the Ministry of Education (MoE) funded Principal Professional Learning Community (PPLC) programme for experienced principals in New Zealand (NZ) suggest a highly valued and strongly supportive programme. My own critique of the programme, against criteria for "strong" professional learning communities (PLCs), reveals unrealised potential in terms of change or improvement ideal for the PPLCs. Suggested enhanced intervention pathways for improvement are provided. (Contains 1 table and 1 figure.)