The COVID-19 pandemic triggered many school and school library closures, resulting in shifts to online and/or hybrid instruction and limited school library access. This survey of parents of PreK–12 students (aged 2–18 years) investigated students’ frequency of access to school library materials prior to (T1), during (T2), and predicted after (T3) the pandemic ( n = 230). Demographics such as age, gender, race, and ethnicity and other factors such as household income, community type, geographic location, type of school, school environment, and number of books in home were collected. Frequency of access to school library materials was compared at T1, T2, and T3 by demographic and other factors. Results demonstrate that frequency of access to school library materials differed significantly between time points. Repeated-measures analysis of variance showed a significant difference between T1 and T2 and between T2 and T3 but not between T1 and T3. Significant interactions were found for age and frequency of access over time, with age group 6–10 years showing the most change. Significant differences were found for all three types of school environment, with face-to-face students showing less disruption in their access than online and hybrid students. Students’ frequency of access to school library materials was negatively influenced by closures and limited access, with the expectation of a return to similar frequency of access on resumption of normal operations. Given the strong associations between access to school library resources and academic performance, these results suggest student learning may have suffered during these closures.