Crime
The nature of crime, police investigation, the trial process, sentencing, young offenders and international crime, with current NSW law (as at 2026) and how to plan the 15-mark extended response.
Contents
1.What you need to know
Crime is the biggest part of the HSC exam: 15 of the 20 multiple-choice marks in Section I and the 15-mark extended response in Section II Part B, so about 30 of the 100 marks. The syllabus asks you to understand the criminal justice system and to evaluate how effectively it achieves justice for the accused, victims and society.
- The nature of crime: elements of a crime, strict liability, causation, categories of crime, summary and indictable offences, parties to a crime, factors affecting criminal behaviour, crime prevention.
- The criminal investigation process: police powers, reporting and investigating crime, arrest and charge, bail or remand, detention and interrogation, the rights of suspects.
- The criminal trial process: court jurisdiction, the adversary system, legal personnel, legal representation and legal aid, pleas and charge negotiation, burden and standard of proof, evidence, defences, juries.
- Sentencing and punishment: statutory and judicial guidelines, purposes of punishment, aggravating and mitigating factors, the role of victims, appeals, types of penalties, alternative methods of sentencing, post-sentencing considerations.
- Young offenders: age of criminal responsibility, rights when questioned or arrested, the Children's Court, penalties, alternatives to court.
- International crime: categories, and domestic and international measures for dealing with it.
Every section ends with "the effectiveness of … as a means of achieving justice". Learn the law, then learn one or two strengths and weaknesses of each part with evidence. The law stated here is NSW and Commonwealth law as at 2026.
2.The nature of crime
A crime is an act or omission against society that is punishable by the state. Most crimes have two elements the prosecution must prove:
- Actus reus (guilty act): the physical act or omission, which must be voluntary.
- Mens rea (guilty mind): intention, recklessness or, for some offences, criminal negligence.
Strict liability offences do not need mens rea; the accused can still argue an honest and reasonable mistake of fact. Absolute liability offences allow no such defence. Most regulatory offences (traffic, fishing, food safety) are strict liability so they can be enforced cheaply, often by penalty notice.
Causation matters for "result" crimes such as murder: the accused's act must be a substantial and operating cause of the result.
Categories of crime
| Category | Examples |
|---|---|
| Offences against the person | Homicide, assault, sexual offences |
| Offences against the sovereign | Treason, espionage, foreign interference |
| Economic offences | Larceny, fraud, insider trading, cybercrime for profit |
| Drug offences | Possession, supply, importation |
| Driving offences | Drink driving, dangerous driving |
| Public order offences | Offensive language, affray, riot |
| Preliminary crimes | Attempt, conspiracy |
| Regulatory offences | Breaches of rules on licensing, safety, environment |
Summary offences are less serious and heard by a magistrate in the Local Court. Indictable offences are more serious and are usually tried in the District Court or (for murder and the most serious crimes) the Supreme Court, often with a jury.
Parties to a crime
- Principal in the first degree: commits the act.
- Principal in the second degree: present and assisting (for example a lookout).
- Accessory before the fact: helps or encourages beforehand but is not present.
- Accessory after the fact: knowingly helps the offender avoid arrest or punishment.
Factors affecting criminal behaviour and crime prevention
Factors include psychological, economic, social, genetic, political and self-interest factors. Prevention is either situational (reducing opportunities, such as CCTV, lighting and locks) or social (addressing causes, such as education, employment and drug treatment programs). Social prevention is slower but tackles the reasons people offend.
3.The criminal investigation process
The main statute is the Law Enforcement (Powers and Responsibilities) Act 2002 (NSW) (LEPRA). Police powers must be balanced against suspects' rights.
- Reporting crime: most crime comes to police through reports. Some crimes (sexual assault, domestic violence) are heavily under-reported.
- Searches and warrants: police generally need a warrant from an independent issuing officer to search premises; they can search people in public with reasonable suspicion.
- Technology: CCTV, DNA (Crimes (Forensic Procedures) Act 2000 (NSW)), phone data and surveillance devices help detection but raise privacy concerns. A recent example of the balance: 2024 amendments to LEPRA let police use hand-held metal detectors ("wands") to scan people in designated areas such as transport hubs and shopping precincts without needing a reasonable suspicion, in response to knife crime.
- Arrest: without a warrant only if police suspect on reasonable grounds that the person committed an offence and arrest is reasonably necessary for a listed purpose (s 99). A court attendance notice (or, for some matters, a summons issued by a court) is a less intrusive way to bring a person to court. After arrest, police decide whether to charge the person: the formal accusation that starts the prosecution.
- Detention after arrest: an investigation period of up to 6 hours, extendable once by a detention warrant for up to 6 more hours. Some "time out" (waiting for a lawyer, medical treatment) does not count.
- Rights of suspects: to be told the reason for arrest, to a caution, to contact a lawyer and a friend or relative, to an interpreter, and to silence. Under the Evidence Act 1995 (NSW) s 89 no unfavourable inference can be drawn from silence, but s 89A (2013) allows one for serious indictable offences if a special caution is given, a lawyer is present, and the accused is 18 or over and not cognitively impaired.
Bail and remand
The Bail Act 2013 (NSW) uses an unacceptable risk test: bail may be refused only if there is an unacceptable risk the accused will fail to appear, commit a serious offence, endanger safety or interfere with witnesses or evidence, and conditions cannot reduce the risk. For show cause offences (added in 2015, and extended to more serious domestic violence offences in 2024), the accused must first show why detention is not justified. In 2024, NSW also added a temporary extra bail test for some young people aged 14 to 17, extended in 2025.
A person refused bail is held on remand. Rising remand numbers are a major justice issue, because people who have not been convicted lose their liberty.
4.The criminal trial process
| Court | Criminal jurisdiction |
|---|---|
| Local Court | Summary offences and many indictable offences dealt with summarily |
| Children's Court | Most offences by people under 18 |
| District Court | Most indictable offences (robbery, serious assault, drug supply) |
| Supreme Court | Murder, manslaughter and the most serious offences |
| Court of Criminal Appeal | Appeals from the District and Supreme Courts |
| High Court | Final appeals, with special leave |
The adversary system: two parties present their cases before an impartial judge; the jury decides the facts. The prosecution carries the burden of proof, to the standard beyond reasonable doubt.
Legal personnel: magistrates and judges; police prosecutors (Local Court); the Office of the Director of Public Prosecutions (serious matters); defence lawyers, including Legal Aid NSW and the Public Defenders. In Dietrich v The Queen (1992), the High Court held that a trial for a serious offence may be stayed if the accused is unrepresented through no fault of their own.
Pleas and charge negotiation: NSW gives fixed discounts for guilty pleas in indictable matters (25% before committal, 10% at least 14 days before trial, 5% otherwise). Charge negotiation saves time and spares victims, but may produce outcomes that do not reflect the crime.
Evidence: governed by the Evidence Act 1995 (NSW). Hearsay, opinion and improperly obtained evidence may be excluded. Vulnerable witnesses can give evidence by video link or recorded interview.
Defences:
- Complete defences lead to acquittal: self-defence (Crimes Act 1900 (NSW) s 418), duress, necessity, mental health or cognitive impairment (special verdict of "act proven but not criminally responsible" since 2021), honest and reasonable mistake of fact (strict liability).
- Partial defences reduce murder to manslaughter: extreme provocation, substantial impairment by abnormality of mind, excessive self-defence.
Juries: 12 people decide guilt in indictable trials. Since 2006, NSW allows majority verdicts (11–1) after at least 8 hours of deliberation. An accused can apply for a judge-alone trial.
5.Sentencing and punishment
The Crimes (Sentencing Procedure) Act 1999 (NSW) sets out the purposes of sentencing (s 3A): adequate punishment, deterrence (specific and general), protecting the community, rehabilitation, accountability, denunciation and recognising the harm done to the victim and community. These purposes often conflict.
- Aggravating and mitigating factors (s 21A): weapons, offending in company and vulnerable victims increase a sentence; no record, remorse, good character and an early plea reduce it.
- Statutory and judicial guidelines: maximum penalties, standard non-parole periods (a guidepost since Muldrock v The Queen (2011)), guideline judgments.
- Victims: victim impact statements let victims describe the harm.
- Appeals: offenders can appeal against conviction or sentence; the Crown can appeal against an inadequate sentence.
Types of penalties in NSW
Since September 2018, NSW no longer uses suspended sentences or home detention orders (the syllabus still lists them, so mention the change). Current options, from least to most severe, include: dismissal or conditional release without conviction (s 10), fines, conditional release orders, community correction orders, intensive correction orders (imprisonment served in the community) and full-time imprisonment.
Alternative methods: circle sentencing for Aboriginal offenders (a 2020 BOCSAR evaluation found lower rates of imprisonment and reoffending), the Drug Court, restorative justice and youth justice conferences.
Post-sentencing: security classification, protective custody, parole (State Parole Authority), extended supervision and continuing detention orders under the Crimes (High Risk Offenders) Act 2006 (NSW), the child protection offender register and deportation of non-citizens on character grounds.
Worked example: reading a sentence
An offender receives 9 years with a non-parole period of 6 years 9 months. The minimum time in custody is 6 years 9 months; the remaining 2 years 3 months is the parole period. The non-parole period is 75% of the total sentence, which is the usual ratio in NSW unless the court finds special circumstances.
6.Young offenders
- Age of criminal responsibility: 10 in NSW (Children (Criminal Proceedings) Act 1987 (NSW) s 5). For children aged 10 to 13, doli incapax means the prosecution must also prove the child knew the act was seriously wrong (RP v The Queen (2016)). There is a national debate about raising the age: the ACT raised it to 14 in 2025; NSW has not.
- Rights when questioned: a support person must be present for interviews, plus all adult rights.
- Children's Court: closed to the public, names cannot be published, penalties focus on rehabilitation (the most serious is a control order in a detention centre).
- Young Offenders Act 1997 (NSW): warnings, cautions and youth justice conferences divert young people away from court.
- Effectiveness: diversion works for most young people, but Aboriginal young people are heavily over-represented in custody, and many young detainees are on remand. The Youth Koori Court (since 2015) is one response.
7.International crime
- Crimes against the international community: genocide, crimes against humanity, war crimes and the crime of aggression. These are within the jurisdiction of the International Criminal Court (ICC), set up by the Rome Statute (1998), which works on the principle of complementarity.
- Transnational crime: crime crossing borders, such as drug trafficking, people smuggling, money laundering and cybercrime, dealt with mainly under domestic law with international cooperation.
- Measures: extradition (Extradition Act 1988 (Cth)), mutual assistance, Interpol notices, the Australian Federal Police, the UN Convention against Transnational Organized Crime (2000).
- Effectiveness: cooperation on transnational crime is fairly strong, but the ICC has no police force and depends on states. Its 2023 arrest warrant for Vladimir Putin has not been executed, while Rodrigo Duterte was arrested and transferred to The Hague in 2025.
If any of this topic affects you personally, you can talk to someone confidentially: Kids Helpline 1800 55 1800 or 1800RESPECT 1800 737 732.
8.Common mistakes
- Using old law. Suspended sentences, home detention and the "not guilty by reason of mental illness" verdict are no longer used in NSW.
- Mixing up elements and categories, such as actus reus versus mens rea, or summary versus indictable.
- Describing instead of evaluating. The extended response is marked on judgement, not on how much you know.
- Vague evidence. "A recent case" earns less than "RP v The Queen (2016)".
- Ignoring the date. Laws change. Give the year of each statute, case and reform.
9.Exam tips
- Section I: read every option. Many questions describe a scenario; underline the detail that decides the answer (age, timing, which court).
- Section II Part B (15 marks, about 600 words): write a short introduction with a clear judgement, three or four body paragraphs each based on one issue, and a conclusion. End each paragraph by linking back to the question.
- Evaluate means make a judgement based on criteria. Useful criteria in Crime are: balancing the rights of individuals and society, protecting victims, resource efficiency, accessibility, and consistency with community values.
- Support every point with legislation, a case, a statistic or a media report.
- Themes and challenges (discretion, the role of law reform, balancing rights, the effectiveness of the system) make good paragraph frames.
10.Links to other topics
- Human Rights: the right to a fair trial and the presumption of innocence (ICCPR Article 14), and the rights of children (Convention on the Rights of the Child).
- Family: domestic violence offences and apprehended violence orders.
- World Order: the ICC, war crimes and crimes against humanity.
- Workplace: industrial manslaughter and wage theft offences.
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