What is the true purpose of a website: to inform, or to promote? Well, that depends on your intended outcome. Companies selling a product can focus on promotion, of the product, perhaps including an FAQ page for customer support. Informational sites, like Wikipedia, simply provide information about whatever the user wants to learn or municipality sites that provide simply what’s going on in the community.
School websites have a challenge that is difficult to overcome in that they are trying to attract new students, but also maintain relationships with existing parents and students by keeping them informed.