Evaluation of the Key Stage 2 Language Learning Pathfinders

As is clear from the above, the results described here were subject to a number ofassumptions around salaries, working time and so on which make any findings tentative. Asensitivity analysis was carried out to explore the susceptibility of findings to changes inthese assumptions, and this will be discussed below. As well as this, the fact that data werecollected on the basis of interview and self-report makes the analyses susceptible tounreliability caused by faulty recall, perceptual errors and self-presentation bias. Bycollecting data from a range of respondents (local authority advisors, teachers, heads), wehave attempted to build in triangulation of data sources, which has allowed us to arrive atmean values which are more stable and reliable than individual estimates. The only data forwhich this was not possible was data on local authority advisor time, which was based solelyon local authority advisor self-report.3.6.4.2. Travel costsIncluding:• Local authority advisor travel• Secondary teacher travel• Primary teacher travel• Other staff travel• Travel is further subdivided by mode of transport (e.g. car, rail)Travel costs were again based on self-report estimates from interviews with local authorityadvisors, headteachers and teachers. Respondents were asked to estimate average milestravelled for Pathfinder purposes in one week, and were asked whether this was done by caror public transport. Costs were calculated as being 38p per mile for car transport, acommonly used cost estimate in the public sector. It was found that public transport was notused to any extent for Pathfinder travel.3.6.4.3. Cost of development of resources.This included:• Development of own resources. This included the cost of materials, bought in expertise,and time additional to that covered under staff costs.• Bought in resources, such as packs and materials, e.g. Pilote, Early years.• ‘Free’ resources, such as materials provided to schools by the local authority.119