What its position is on the decrease in the number of principal teachers of history in state-funded secondary schools.

The organisation of schools is a matter for local authorities and head teachers. As more schools organise on a faculty basis, there has been a decrease in the number of principal teachers of history. This is not unique to history and advice from HM Inspectorate of Education suggests that principal teachers are seeking appropriate advice and collaborating with colleagues to plan courses that are coherent, relevant and engaging, with an appropriate place for history in the curriculum.
In Scottish education we encourage leadership at all levels. There may not be a principal teacher in history but that does not mean that there is nobody leading the subject.