The phrase "principal focus" refers to the main point or center of attention. It is the primary area or idea that something or someone is focused on or concerned with. Full definition
This report explores how states are using their authority to increase the supply of effective principals focused on raising student achievement. (bushcenter.org)
This indexed universal life offering from Principal focuses more on cash value accumulation than death benefit. (termlife2go.com)
An effective principal focuses on developing collective efficacy, motivating and influencing their thinking and behaviors to obtain productive results. (idra.org)