Aug 14 is the deadline to register for Sept 19 ACT. Class of 2022 and 2023, the ACT that you take at CHS in spring of your JR year should not be you first ACT!
Underclassmen: document how you are feeling these days/how have things changed for you. The CommonApp is going to ask you about a life-defining moment. Is it now? Will you remember? Maybe it's COVID-19, maybe not. Better to write it down now and decide later.