The school details page will show the basic details about your school; address, telephone number, fax number and a map.
By default, Insight will show all of this information (except the map) in a banner at the very top of the page. As this information is already visible by default, many schools disable the School Details page using parents' role options. However it is possible to display a custom message in the banner at the top of Insight (using preferences) so in this case, it makes sense to show the school's details elsewhere.
You can also choose to show a Contact Us panel. This allows parents to type a message which will be sent to the school. The message will be sent to an email address that you specify in preferences.