This book examines the circumstances surrounding cases where K-12 schools hired or retained individuals with histories of sexual misconduct and determines the factors contributing to such employment actions. An overview of selected federal and state laws related to the employment of convicted sex offenders in K-12 schools is reviewed. Additionally, many challenges arise in educating students who change schools frequently. Research suggests that mobility is one of several interrelated factors, such as socio-economic status and lack of parental education, which have a negative effect of academic achievement. The recent economic downturn, with foreclosures and homelessness, may be increasing student mobility.