>> reporter: but deaths from the virus rising in 32 states. hospitalizations in 28. florida topping half a million cases. the president insisting children have stronger immune systems. >> if you look at children, children are almost, and i would almost say definitely, but almost immune from this disease. >> reporter: but children are not immune. and some returning students are already infected. in canton, georgia, a second grader testing positive. all 20 students and the teacher are in quarantine. this was the scene at north paulding high school. many students without masks. the superintendent admitting to parents that the photo doesn't look good, but insisting they're following protocols and that class changes are a challenge. >> back to sool! back to school! >> reporter: in ohio, a protest calling for more time in the classroom. >> we here in dublin just want our kids to have choices. >> reporter: but in chicago, the third-largest school district in the country, a decision to restart classes virtually. on the west coast, third grader nolan wu in california isn't sure in-person classes will work.