Complex sentence: She held instructional teaching positions at Robinswood Middle School, Orange County, Florida from August 13,2007 to December 19,2008 when she resigned pending the outcome an investigation for alleged offenses of "Inappropriate behavior-Texting 8th Grader".
Split into simpler sentences: She held instructional teaching positions at Robinswood Middle School, Orange County, Florida from August 13,2007 to December 19,2008. On December 19 2008 she resigned pending the outcome an investigation for alleged offenses of "Inappropriate behavior-Texting 8th Grader".