The cabinet secretary recently told the Education and Skills Committee that he has concerns about the low retention rate of experienced teachers, more of whom left the profession in the academic year 2016-17 than expected. Clearly, that places additional pressure on other teachers, but it also places budgetary pressures on local authorities to recruit sufficient support staff. What work is the Scottish Government undertaking in co-operation with local authorities to collect the relevant data about numbers of support staff and to assess the relevant gaps in schools?