To address the California Common Core State Standards for ELA/Literacy in grades six through twelve, teachers have students write routinely over extended and shorter time frames for a range of tasks, purposes, and audiences. In the history-social science curriculum, students are exposed to a variety of primary and secondary sources about people and events of the past and the assessments may take the form of expository writing, such as historical arguments and explanation where students are asked to marshal evidence to support a thesis or claim.