Complex sentence: Rebecca Moore, a scholar teaching Religious Studies at San Diego State University, described the ReligiousTolerance.org website as a "massive education program" and she expressed regret that her students dismissed the site at first because it supported itself with advertising.
Split into simpler sentences: Rebecca Moore, a scholar teaching Religious Studies at San Diego State University, described the ReligiousTolerance.org website as a "massive education program". She expressed regret that her students dismissed the site at first because it supported itself with advertising.