Teachers use a variety of methods to assess mastery of a topic. We use observations, quick formative assessments, longer summative assessments, and long-term benchmark assessments. The problem is that these assessments come in a variety of ways, depending on where you teach.
Many districts utilize pre-built assessments from curricular resource companies. Others build assessments based on curricular resources and change every 4-6 years with their new resource adoption cycles. Some will create assessments based on their state-approved learning standards and work to adapt the curricular resources to their true “curriculum” and assessments.