But Ofsted says there has been 'increased stability' at Portland School and Specialist College following the appointment of a permanent head In his letter to the school, inspector Chris Pollit notes that there has been 'significant change' in leadership across both the primary and secondary sites, with Joanne McKinney being appointed the permanent headteacher, and new heads of school for primary and secondary.READ: 'Inadequate' Stoke-on-Trent special school 'getting worse in some areas',...