From 2006-7 through 2009-10 the percentages of part-time instructional staff and of volunteers in Nevada mirrored each other. That is, when the percent of part-time teachers increased, the percent of volunteers decreased. When part-time instructional staff stayed steady, so did volunteer rates. Hardly any instructional staff was full time.
In 2009-10, the pattern showed signs of ending. By 2010-11, even fewer volunteers served. Now as part-time teaching rates decreased, full-time instructional staff increased. As of 2010-11 more than a fourth (26.8%) of instructors were full-time.