MID-VALLEY MEDIA Corvallis School District students in all grades will return to in-person learning on May 3, Superintendent Ryan Noss announced at Thursday nightâs virtual school board meeting. On March 8, for the first time since the COVID-19 pandemic shut schools down last spring, the district began bringing some students back into classrooms two days a week as part of a hybrid model that still included some distance learning. The district used a phased approach that started with kindergartners and added older students one grade and one week at a time. Fifth-graders returned to classrooms this week, with sixth- and ninth-graders scheduled to come back next week and all remaining grades the week after.