Iowa Department of Education Recent Blog Posts Defining Fidelity Categories When Implementing Reading Interventions When tracking teachers’ fidelity during implementation of a literacy intervention, both use of the intervention components and quality of intervention delivery should be measured, keeping an eye out for both global and lesson-specific components. The Importance of Fidelity When Implementing Reading Interventions Effective implementation of a literacy initiative that includes interventions calls on teachers to do so as intended, with high fidelity. Maintain Focus and Commitment with an Improvement Plan: The PROPeL Initiative Create an improvement plan and follow it to student success when implementing a literacy initiative.