Also not a lawyer, but if I am correct the following 3 criteria need to be met
1 - the event must be beyond the reasonable control of the affected party;
2 - the affected party’s ability to perform its obligations under the contract must have been prevented, impeded or hindered by the event; and
3 - the affected party must have taken all reasonable steps to seek to avoid or mitigate the event or its consequences.
The only one I could see coming into question would be number 3. How could a school, for example, prove they took reasonable steps to seek, avoid or mitigate the event or its consquences when they bring in a 100 or so kids, put them in dorms and and have them workout, especially if one or more kids gets the virus. Or if enough get the virus to the season is cancelled. Just spit-balling