Consider other techniques for collection measurement (besides size) that might better recognise e-resources and resources available from sources beyond the library.
E-resources could be better measured by calculating the number of times the resource is accessed. For example sites such as http://www.scoop.it/ can determine how many views occur each day, week, month. You can sign up for free or libraries can pay money to gain premium membership – we are trialling it at the moment to support students with common assessment tasks in each year group – suggesting online resources that may be beneficial in their research. Companies such as, http://www.wheelersbooks.com.au/, also offers the same data for e-resources hence making it easier to measure usage. Within schools, OASIS as an operating system, is also very useful as it is able to print off usage data for all resources.
How realistic is it to use output measures, eg use of resources as basis for library budgets?
Output measurement does not reveal how useful a resource may be – again things such as suggestion boxes (physical or on websites) may be useful for collecting this information, discussion and collaboration with staff and students, surveys or teacher librarians being active members within classrooms when using resources could all help determine the usefulness of a resource.