Law Firm Aptitude Test & Vacation Scheme Assessment Guide 2026

UK law firms — from the Magic Circle to mid-tier and regional practices — are among the most selective graduate employers in the country. The typical path to a training contract runs through a vacation scheme (vac scheme) or a direct training contract application. Both routes involve aptitude testing as an early-stage filter, before candidates are invited to interview and assessment centre stages.

The standard law firm application process has four stages:

The Watson Glaser Critical Thinking Appraisal (WGCTA) is the most widely used aptitude test in law firm recruitment. It measures the ability to think critically, evaluate arguments logically, and separate evidence from assumption — core skills for legal analysis, client advice, and dispute resolution. Our full Watson Glaser guide covers all five sections with worked examples; here is a law-specific overview.

Watson Glaser at Law Firms: Scoring and Cut Points

Law firms typically apply a cut score of 65–75% (approximately 26–30 correct out of 40 questions). The exact threshold varies by firm and is not always disclosed. Magic Circle firms generally apply stricter thresholds than regional firms. Candidates should target above 75% in practice before their real test.

Some law firms use SHL-format verbal reasoning tests (True/False/Cannot Say) in addition to or instead of Watson Glaser. These are similar in format to the verbal reasoning tests used by corporate employers, but law firms tend to use dense, technical passages — commercial contracts, regulatory documents, or case law summaries — that reflect the reading demands of legal work.

The key verbal reasoning skill that law firms prioritise is precise language interpretation — the ability to say exactly what a document says and no more. This is the same skill that makes a good contract drafter: know the difference between "the party may" (optional) and "the party shall" (mandatory), between "includes" (non-exhaustive) and "means" (exhaustive). Apply this precision to True/False/Cannot Say answers.

• True only when the passage explicitly and clearly supports the statement — not when it seems reasonable or likely.
• False only when the passage explicitly contradicts the statement.
• Cannot Say whenever the passage does not directly address the question — this is more common than candidates expect.

For preparation, our full verbal reasoning guide covers all three answer types with worked examples at the level of difficulty encountered in law firm assessments.

Situational Judgement Tests present workplace scenarios relevant to the legal profession and ask you to rate or rank possible responses from most to least effective. Law firm SJTs typically involve scenarios about:

• Client service dilemmas: A client asks for advice outside your area of expertise; you discover an error that may have affected a client. How do you respond?
• Team and supervising dynamics: A senior associate gives you incorrect instructions; a colleague is struggling with workload. What is the right course of action?
• Commercial and ethical tensions: A profitable client's instruction raises a conflict of interest concern. A billing pressure conflicts with what's best for the client.
• Professional conduct: You overhear a conversation that may be confidential. A trainee asks you to sign off on work you haven't reviewed. What do you do?

See our complete Situational Judgement Test guide for the full approach to SJT question types across sectors.

Assessment tools change, and some firms use different tools for different application streams (vacation scheme vs direct TC). The table below reflects the most commonly reported tools as of 2026 — always confirm the exact format with your invitation email.

Candidates who pass the aptitude test stage are typically invited to an assessment centre (often combined with or followed by the vacation scheme). Law firm assessment centres include exercises specifically designed to replicate the tasks a trainee solicitor would face in their first year.

Written Legal Exercise

You receive a bundle of documents — a scenario (a commercial dispute, a contractual issue, a client problem), background materials, and sometimes case law or regulation summaries. You must produce a written advice note, memo, or analysis within 60–90 minutes. Assessors score:

• Identifying the key legal and commercial issues in the scenario
• Applying the provided materials accurately (don't import external legal knowledge)
• Structuring your advice clearly (issue → law → application → conclusion)
• Written communication quality: clear, concise, no unnecessary jargon

Group Discussion / Case Study

Typically a commercial case study — a business scenario requiring the group to make a recommendation (e.g. advise a client on an acquisition, analyse a market entry, evaluate a strategic risk). Assessors observe team dynamics as much as content. Demonstrate that you listen to others, build on their points, and guide the group toward a structured conclusion without dominating.

Partner Interview

A 30–45 minute interview, typically with a partner or senior associate, covering: motivation for law and the firm specifically; commercial awareness (current deals, market trends, legal sector developments); competency examples (teamwork, leadership, resilience, communication); and sometimes technical questions about practice areas of interest. See our commercial awareness guide for preparation.

Commercial awareness — understanding how businesses operate, what drives value, and how legal issues connect to commercial outcomes — is consistently cited by law firms as one of the most important differentiators between candidates. It is assessed in interviews, assessment centre group exercises, and some SJTs.

What Law Firms Mean by Commercial Awareness

• Understanding your target firm's clients: Who are they? What are the business challenges they face? How does the legal work your target firm does serve those clients' commercial goals?
• Following current deals and legal developments: Track major M&A transactions, regulatory changes (financial regulation, ESG requirements, data privacy), and market trends in the sectors your target firm serves. The Financial Times, The Lawyer, and Legal Cheek are useful starting points.
• Connecting legal issues to business impact: A contract dispute isn't just a legal issue — it has cost implications, reputational risk, relationship consequences, and operational disruption. A strong candidate articulates all of these.
• Understanding law firm economics: Billable hours, leverage ratios, lockstep vs merit compensation, the rise of alternative legal service providers (ALSPs). Knowing how a law firm makes money demonstrates genuine commercial understanding.

See our full commercial awareness guide for 2026 market themes and specific preparation strategies for law firm and professional services interviews.

• Week 1 — Watson Glaser foundation: Read our complete Watson Glaser guide. Understand all five question types with worked examples. Complete 2–3 timed 40-question practice tests. Aim for 65%+ in week one; target 75%+ by your test date. Review every incorrect answer — the reasoning behind each answer is as important as the answer itself.
• Week 2 — Verbal reasoning and SJT practice: Complete 3–4 timed verbal reasoning practice sessions (True/False/Cannot Say format — available in our free practice tests). Read 2–3 SJT scenario packs. Research your target firm's values and the SRA's ethical principles — these inform the "right" responses in legal SJTs.
• Week 3 — Commercial awareness and interview prep: Read the Financial Times daily. Follow two or three recent major legal deals or regulatory developments in your target firm's practice areas. Prepare 6–8 STAR examples for competency questions. Practise "Why this firm?" with specific references to recent transactions, clients, and practice area strengths.
• Week 4 — Written exercise and assessment centre simulation: Practice writing structured legal advice notes from document bundles (past pupillage competition materials are a good proxy). Participate in a mock group discussion. Refine your commercial awareness pitch. Rest in the 48 hours before your assessment — fatigue is the most common cause of preventable errors in Watson Glaser.