These are the appendixes for the full report, "Evidence and Gap Map of Tier 2 Literacy Interventions for Grades K-3 in the Commonwealth of the Northern Mariana Islands." In 2019 only 24 percent of grade 3 students in the CNMI PSS were reading at or above grade level, as measured by the ACT Aspire (Grindal et al., 2021). This situation was exacerbated by the COVID-19 pandemic in 2020. More students have been identified for Tier 2 services--defined as targeted interventions for students at risk of not meeting benchmarks--than CNMI PSS can serve. Wanting to get students back on track faster, CNMI PSS asked Regional Educational Laboratory (REL) Pacific to identify the state of evidence on Tier 2 literacy interventions for students in grades K-3 and recommend interventions and strategies that CNMI PSS could implement to improve student literacy. The appendixes included in this document are: (1) Study review protocol; (2) Study detail; and (3) List of 37 studies reviewed using the What Works Clearinghouse 5.0 evidence standards.