Enforceable Legal Rules

A legal rule is a rule recognised by the legal system of England and Wales and capable of being enforced through legal institutions. The key word is not "important" or "serious"; it is enforceable. A rule may be morally important, socially expected or required by a private organisation, but it becomes a legal rule only when a recognised legal source gives courts or other legal bodies authority to apply it.

For AQA, define legal enforceability by using four connected ideas:

A legal rule is usually more specific: for example, a claimant must prove a duty, breach, causation and damage in negligence. A legal principle is often broader: for example, the neighbour principle from Donoghue v Stevenson helps explain why a duty of care may exist. Both can matter in AQA answers, but both need a legal source and a legal consequence.

The threshold is therefore: can the rule be recognised and applied by the legal system? If yes, it is legal. If no, it may still guide behaviour, but it is not itself a legal rule. A common confusion is to treat seriousness as the test. Breaking a promise to meet a friend may be rude; it is not automatically a breach of contract. Taking goods dishonestly from a shop is not merely rude; it is conduct the criminal law can classify as theft if the statutory elements are proved.

Legal Rules And Other Norms

Other rules and norms of behaviour can look like law because they also tell people what they should or should not do. The AQA distinction is about origin, enforcement, consequence and change.

The categories can overlap. Murder is both morally condemned and legally prohibited. A workplace safety rule may also reflect statutory duties. A promise can be morally binding and, if contract formation requirements are satisfied, legally enforceable. But overlap does not erase the distinction: the legal question is still whether the legal system recognises a claim, offence, remedy or sanction.

This matters for evaluation. AQA may expect students to analyse the relationship between legal and moral rules by comparing their origins, enforcement methods, consequences and mechanisms for change. Legal rules can change rapidly through legislation; moral views may change slowly and unevenly across a pluralist society. Legal rules are more formal and coercive; moral rules may be wider, more flexible and contested.

The safest answer is not "law equals morality" or "law has nothing to do with morality". It is more precise to say: some legal rules reflect moral values, some regulate behaviour for practical public order reasons, and some deliberately avoid enforcing every moral judgement because legal coercion needs justification.

Civil And Criminal Law

The civil/criminal distinction classifies the type of legal liability and the procedure used to decide it. It is not a distinction between "minor" and "serious", nor between "common law" and "statute". Both civil and criminal law can be serious, and both can come from statute or common law.

The standard of proof reflects the consequence. Criminal conviction carries stigma and may remove liberty, so the prosecution must satisfy the higher standard. Civil liability usually concerns rights and remedies between parties, so the balance of probabilities is used.

The same conduct may sometimes create both criminal and civil consequences. If D deliberately punches V, the state may prosecute a criminal offence and V may bring a civil claim for trespass to the person. The legal systems ask different questions: the criminal court asks whether the offence is proved and what sentence follows; the civil court asks whether a civil wrong is proved and what remedy follows.

There are two common AQA traps:

• Do not say civil law is only common law and criminal law is only statute. Theft is statutory; murder remains a common law offence; negligence is common law; consumer protection is heavily statutory.
• Do not use the wrong consequence. A civil defendant is not "found guilty"; a criminal defendant is not ordered to pay damages as the ordinary classification of the case, even though compensation orders can exist in criminal proceedings.

Sources Of Law

A source of law is where a legal rule comes from and why it has authority. AQA identifies custom, statute law and common law in this topic. In an answer, the source is not decorative background; it tells you how the rule was created, how it can be changed and how strong it is when sources conflict.

Custom is historically important because it shows that law did not only begin with modern legislation. To become legal, custom must be more than repeated behaviour. It must be capable of legal recognition, sufficiently certain and consistent, and not inconsistent with higher legal authority. In an AQA answer, custom is usually best used as a source label and a contrast with modern statute and common law, unless the question specifically gives a custom issue.

Statute law is law made by Parliament. A statute may create offences, civil duties, powers, rights, defences, procedures or remedies. For example, the Theft Act 1968 defines the offence of theft, while the Consumer Rights Act 2015 creates important statutory rights and remedies in consumer contracts. A statute can also abolish, amend or preserve common law rules. The key legal consequence is that courts must apply valid statute, while interpreting its words where necessary.

Common law is judge-made law developed through decisions in cases. The point is not that judges simply invent law whenever they wish. The common law works through precedent: later courts follow the legal reason for a decision, especially from higher courts, when materially similar facts arise. Donoghue v Stevenson is a useful example because it shows common law reasoning developing a duty of care in negligence from a concrete dispute. AQA sources also emphasise that common law is subordinate to statute and usually develops gradually.

Using Sources In Legal Reasoning

Source knowledge becomes rigorous when it changes the way you reason. Before applying a rule, ask: what is the source, what does that source require, and what is the legal effect if the requirements are met?

Use this source routine:

1. Identify the rule or principle.
2. Label the source: custom, statute or common law.
3. State the operational content: elements, threshold, authority and consequence.
4. Check whether another source modifies it.
5. Apply only the material facts.
6. Reach a calibrated conclusion.

Statute usually needs text-led reasoning. You identify the relevant Act or section where known, state the elements in the statutory rule, and apply the facts to those elements. If the wording is uncertain, the legal issue may be interpretation.

Common law usually needs case-led reasoning. You identify the principle from the case or line of cases, decide whether the facts are materially similar or distinguishable, and explain the consequence. The case is useful only if it performs a legal job: creating, clarifying, limiting or applying a rule.

Custom needs recognition-led reasoning. You ask whether the practice is capable of recognition as law. A mere habit is weak; a clear, long-established, legally recognised practice is stronger. In most modern AQA work, custom is more likely to appear as a source comparison than as a detailed problem rule.

Where statute and common law both appear, do not treat them as equal free choices. A statute may replace or modify common law. It may also leave common law remedies or principles available. For example, some contract topics combine common law rules on formation or remedies with statutory consumer protections. A strong answer explains the relationship rather than listing both sources.

Scenario Classification

Classification is the first stage of application. AQA scenario answers often lose precision when students jump straight into a rule without deciding whether the issue is civil, criminal, both, or only a non-legal norm.

Use this classification method:

Consider these short examples.

Example 1: a private insult. A student insults a friend and breaks a social expectation of kindness. Unless the facts also support a recognised legal wrong, this is a social or moral issue, not automatically a legal one. The legal analysis stops because there is no identified legal source, element or consequence.

Example 2: damage to property. A driver reverses carelessly into a neighbour's wall. Civil law may be engaged because the neighbour may claim compensation for damage caused by negligence. Criminal law may also be relevant if a specific offence is made out, but do not assume a crime from every accident. The classification depends on the legal source and elements.

Example 3: deliberate violence. A person deliberately strikes another. Criminal law may be engaged because the state can prosecute an offence if the elements are proved. Civil law may also be engaged because the victim may sue for a tort such as trespass to the person. The same facts can therefore produce two routes, two standards of proof and different outcomes.

Application must map facts to classification criteria. Do not write, "This is serious, so it is criminal." Write, "The conduct may be criminal because it is conduct the state can prosecute as an offence, with the prosecution proving the elements to the criminal standard. It may also be civil because the injured person may seek a remedy for a wrong against them."

Evaluation And AQA Method

Evaluation in this topic is not personal opinion about whether a rule feels fair. It is legal judgement using criteria such as certainty, democratic legitimacy, flexibility, access to justice, fairness, public protection and institutional competence.

For legal rules and other norms, evaluate whether legal enforceability is justified. Enforcing rules through law gives clarity and coercive power, but law cannot sensibly enforce every moral or social expectation. In a pluralist society, people disagree about morality, so criminalising or legally enforcing every moral view would be overbroad. A stronger evaluation recognises that law often reflects moral values but needs legal limits, procedures and evidence.

For civil and criminal law, evaluate why classification matters. Criminal law protects the public and expresses condemnation, but the higher standard of proof is necessary because conviction can carry stigma and loss of liberty. Civil law gives individuals remedies and may be more suitable for compensation, but it depends on parties bringing claims and may not express public condemnation.

For sources of law, compare institutional strengths:

In AQA answers, this lesson supports three types of work:

• AO1 explanation: define legal rules, civil/criminal law and sources accurately, using legal vocabulary.
• AO2 classification: identify whether facts raise a civil route, criminal route, both or no legal route, then apply the right standard, parties and consequence.
• AO3 evaluation: make a reasoned judgement about enforceability, source strengths or the civil/criminal distinction using legal criteria.

Concise recap: start with the legal status of the rule, identify its source, classify the route as civil or criminal where relevant, apply the correct proof standard and consequence, and evaluate only with legal criteria. That sequence keeps the answer anchored in law rather than general debate.