Testing of Asymptomatic Persons for Covid 19

As a Yavapai County employee who works in schools we are to undergo testing for COVID-19 prior to the start of the 2020-21 school year this June. This is part of the effort to reduce disease spread, but testing asymptomatic persons, especially a one-time testing, seems like a waste of resources. What are your thoughts on testing asymptomatic persons who cover alot of ground in their job? Do you think we will eventually just incorporate COVID-19 testing like TB? Thanks for your post!