The COVID-19 pandemic shed a light on the differences in educational outcomes within American public schools. Although race and socio-economic status is independently associated with scholastic outcomes, it is necessary to take an intersectional approach to examining the persistent and widening opportunity gap stemming from inequity in public education. Certain groups that have been historically marginalized continue to be disproportionately disadvantaged when it comes to educational outcomes. Researchers anticipated that students would return to school in September 2020 with far fewer academic gains compared to a typical school year. This academic loss could lead to a reduction in lifetime earnings, with disadvantaged students facing a greater loss (Kuhfeld & Tarasawa, 2020; Hanshek, 2020). The purpose of the proposed study was to provide insight into the relationship between public school re-opening models post COVID-19 building closure and the characteristics of the students served in each re-opening model. In addition, this study sought to determine the relationship between the quality and continuity of a multi-tiered system of supports (MTSS) within each of the main three school re-opening models. To address the relationship between schools re-opening model and characteristics of students served, publicly available data from a sample of 73 public school districts within one county of the northeast United states was examined. In order to investigate the relationship between a school district's re-opening plan following COVID-19 building closure and the demographic and socio-economic make-up of students served in the school district, multinomial logistic regression analyses were conducted. Results indicated that a school district's percentage of Black students, a school district's percentage of students receiving ELL, a school district's percentage of students who received free and/or reduced lunch, and the total number of students enrolled in a district were statistically significant predictors for a school's re-opening model post COVID-19 building shutdown. To address MTSS implementation level, three case studies were completed, which revealed differences in overall level of MTSS implementation between in-person re-opening when compared to virtual or hybrid reopening. However overall level of MTSS implementation was similar across virtual and hybrid re-opening models. Implications and future directions are also discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]