The School homepage uses the "School Home" template. This template works the same as your main homepage.

There are two subpage templates available to display for the School subsite, which will display the separate logo, header, footer, etc.  These two templates work the same as your default subpage templates in regards to the header and section options. 

These are labeled:

• School - Page
• School - Page Fullwidth

People > Members and People > Groups

Groups that you'd like to display on the school staff page need to be assigned to the "Staff Groups School" series.