It is clear that in school and on the way to school youth routinely encounter teasing, disrespectful remarks, or unwanted/uninvited touching that is sexual in nature (American Association of University Women Educational Foundation, 1993,2001; Stein, 1999). Often, the perpetrators are their classmates, other students, and less frequently school staff-instructional staff, janitors, bus drivers and other adults associated with school (American Association of University Women Educational Foundation, 2001; Stein, 1999). Surprisingly often, the events occur within as well as across gender, but most often include a male perpetrator and a female victim (Fineran, 2002; Rickert, Vaughan, & Wiemann, 2002). In multiple surveys, youth assert that much of this behavior occurs publicly and evokes little reaction from either other students or school staff (American Association of University Women Educational Foundation, 1993,2001; Fineran & Bennett, 1998). For the youthful victims, there is often confusion and embarrassment, a change in their relationship to school and the academic goals of school, as is true for their reactions to more general and milder forms of teasing, bullying and disrespect (American Association of University Women Educational Foundation, 2001). Absenteeism, poorer grades, depression, and anxiety often ensue; suicidality and other mental health problems (Ackard & Neumark-Sztainer, 2002) as well as a propensity for later re-victimization have been documented (Coker et al., 2000; Humphrey & White, 2000; Smith, White, & Holland, 2003). For vaginal/penile assault, unplanned pregnancy is a concern. The current concentration of HIV (Centers for Disease Control and Preventions, 1999a; Krauss et al., 2001; Rosenberg & Biggar, 1998) and other sexually transmitted infections among adolescents and youth (Martin, Clark, Lynch, Kupper, & Cilenti, 1999; Rickert et al., 2002; Steele, 2000) make potential health sequelae of sexual assault quite serious. The struggle of youth to understand what has happened to them and go on is mirrored in the adult world as the adults responsible for their guidance and safety begin to sort out their own terminology regarding source, severity, intent of physical or emotional harm, location, and even the sexual content of events (Fineran, 2002). On the basis of their definitions, adults also formulate policy and response. The adult language about sexually charged and harmful acts is evolving. It includes terms such as rape, attempted rape, sexual assault, sexual harassment, domestic violence, date rape, dating violence, acquaintance rape, hate crimes and violence against sexual minorities, intimate partner violence, child abuse, peer abuse, peer violence, sexual violence in schools, sexual exploitation, and sexual violence (Ackard & Neumark- Sztainer, 2002; Fineran & Bennett, 1998; Stein, 1999). Some of these terms have legal connotations, e.g., sexual violence, sexual harassment, while others have developed from social science research in which either the type of sexual violence, its predictors or its after-effects seem to vary by relationship of victim to perpetrator, characteristics of the victim, by duration or by setting, e.g., late vs. early childhood abuse (e.g., Maker, Kemmelmeier, & Peterson, 2001). Some evolving terms, e.g., peer sexual violence, rely on a growing understanding of the social world of the young. Unlike sexual violence among adults where much violence occurs within intimate or formalized relationships, youth sexual violence may occur in relationships that are transitory; the "dating" of "dating violence" may refer to social forms that are pass6 to older students or irrelevant to younger students (Krauss et al., 2001); or students may be harmed by classmates who are relative strangers rather than intimates. Peer sexual violence may occur during childhood, but is distinct from child sexual abuse. Child sexual abuse statutes are quite detailed, but often imply "contact or interaction between a child and an adult when the child is being used for the sexual stimulation of that adult or another person" (National Center on Child Abuse and Neglect, 1981). Childhood sexual abuse may be committed by another minor when that person is either significantly older than the victim (often defined as more than five years) or when the abuser is in a position of power or control over the child (Ackard & Neumark-Sztainer, 2002; National Center on Child Abuse and Neglect, 1981). Since in the majority of cases at school, the perpetrator of sexual violence is likely to be another student, one whose own experience or witness of harm may lie behind his or her hurtful and sexually-charged act (Clarke, Stein, Sobota, Marisi, & Hanna, 1999), adults struggle to achieve a balance between the "soft" responses-teaching, counseling, conflict-resolution-that would heal both victim and perpetrator, and the "hard" responses-discipline, zero-tolerance policies (pre-existing and mandatory prescribed punishments)-that would deter such events from occurring within the school environment (National Education Association, 2004). "Hard and "soft" responses are also involved in preventing the perpetuation of "hostile environments" where pervasive and persistent sexual harassment and sexual violence are likely to occur. Hard responses include sign-ins, weapons searches, metal detectors, hall patrols, police presence and other security techniques (National Education Association, 2004), while soft responses include training of all school staff and students to recognize and manage interactions that may be harmful, e.g., to understand "flirting vs. hurting," in the language of one training program (Stein & Sjostrom, 1996). And training programs must take account of what is required of youthful victims in school disciplinary, civil or criminal proceedings. The specific acts that define sexual violence-sexual assault, attempted rape or rape-originate in definitions handed down from criminal law. Their determination depends upon overt signs of intent, force, injury, or, in the case of rape, penetration and lack of consent. Consent is particularly complex, with standards varying by state and jurisdiction. Consent is dependent on mental states (e.g., someone who is drunk cannot consent), the age of the victim (e.g., in some jurisdictions someone 16 or under cannot consent), and age difference between victim and perpetrator (e.g., in some jurisdictions a youth five years or more younger than the perpetrator cannot consent). Many school-age youth within a state or jurisdiction are wholly ignorant of these definitions and standards (Yee, O'Day, O'Sullivan, & Krauss, 2000). Other terms (e.g., the "unwelcome, uninvited, and unwanted") that define acts of sexual harassment generally, depend on an understanding of youth's internal intentions and reactions. In law, proof of that intent may require that students come forward, document and complain about their treatment or document and complain about the failure of school authorities to address and rectify the incidents that are happening to them. To date, the Supreme Court has heard three cases regarding sexual harassment or violence where the plaintiffs intended to place responsibility on schools and collect damages for harassment or violence that occurred within schools. The Court decided for the plaintiff in two (Franklin v. Gzuinnett Counfy Public Schools, 1992; Davis v. Monroe Counfy Board of Educafion, 1999) and cited the victim's lack of complaint to school authorities in the third case (Gebser v. Lago Vista Independent School District, 1998). The current chapter will focus on sexual violence in the schools, which is understudied and is a difficult area to study. Sexual harassment in the schools has been comprehensively reviewed by Stein (1999). Stein considers all forms of harassment and hate crime directed toward sexual minorities as sexual violence, but concludes that current understanding labels sexual harassment as the general term, with sexual violence-assault, attempted rape or rape-representing more severe forms of harassment. Sexual violence, according to that understanding, is distinguished by the availability of criminal action remedies in which individuals, the perpetrators, are held liable. These criminal proceedings are available in addition to actions taken by the school, the Office of Civil Rights of the U.S. Department of Education, civil proceedings that apply to all sexual harassment, and other criminal proceedings that apply to child abuse. The chapter will begin with a definition of sexual harassment and violence, indicate the prevalence of school violence and the difficulties in determining its prevalence, summarize recent research on effects of sexual violence in adolescence, briefly outline the landmark Supreme Court decisions that have changed the school liability and school response landscape, present a sampling of school policy and remedy responses, and end with a unique perspective on school violence from the viewpoint of school nurses and students who have participated in an in-depth study of adolescent sexual behavior and the social settings in which it occurs.