Google Earth offers an address import feature as part of its "pro" application, which is currently only available for Windows. However, there are a number of tools out there that will perform this conversion for free and produce a KML file, which you can import into Google Earth or other mapping applications. One such tool is
BatchGeoCode. It is completely web-based, uses an easy Excel template (provided), and gives you the option to download the finished KML file. The only limitation is a 100-address limit for the conversion.
For fun, I mapped the addresses of the University High School and Catlin Gabel Faculty and saved the images from the same altitude (29 miles).
University High School: large image
Catlin Gabel School: large image