(Updated at 11:05 a.m.) In the past eight months, the students in Vanessa Edwards’s nursing class have become well-versed in adapting to change. After starting the school year in a virtual setting in July, they were among the roughly 8,000 students that attended in-person classes in the fall, only to revert to online classes when Fairfax County Public Schools paused plans for in-person instruction after winter break. So, no one was fazed when a fire alarm blared through the halls of Fairfax County Adult High School in Springfield half an hour into Edwards’s first in-person class of 2021 on Wednesday (Feb. 17).