In the Republic of the Marshall Islands, college readiness and early college success are major concerns. More than 75 percent of a recent cohort of incoming students at the College of the Marshall Islands did not place into credit-bearing math and English courses, which suggests that students might not be academically prepared to take postsecondary coursework. This study yields information about which demographic and academic preparation factors relate to college readiness and early college success in the Republic of the Marshall Islands. The findings can inform potential policy and practice around college preparation. The Republic of the Marshall Islands Ministry of Education and College of the Marshall Islands provided data for students who graduated from Republic of the Marshall Islands public high schools between spring 2015 and spring 2017 and enrolled as first-time, degree-seeking students at the College of the Marshall Islands between fall 2015 and fall 2017 (n = 482). The study examined the relationships between student characteristics and college readiness and early college success based on students' achieving three indicators: placing into only credit-bearing math and English courses, earning all credits attempted during the first year of college, and persisting to a second year of college. [For the full report, see ED611200. For the appendixes, see ED611201. For the study brief, see ED611202.]