Up-To-Date represents the total percentage of students at the school that is up-to-date on all vaccinations. Schools considered "Safest" have 95% to 100% of students fully vaccinated. Schools considered "Moderately vulnerable" have 90% to 94.9% of students fully vaccinated. Schools considered "More vulnerable" have 80% to 89.9% of students fully vaccinated. Schools considered "Most vulnerable" have less than 80% of students fully vaccinated.