Evaluation and scoring
Quality score
Written by Justin Cesman, CEO of Skim. Last reviewed:
- Definition
- A quality score is the mark a public sector evaluator awards to the non-price (technical) elements of a tender, assessed against published award criteria — usually on a 0–5 or 0–10 scale with written descriptors — and often weighted at 40–70% of the total evaluation.
Key takeaways
- A quality score rates the non-price elements of a bid — method, delivery, risk, added value — against the published award criteria, not against rival bidders.
- Public buyers typically use a 0–5 or 0–10 scale with written descriptors; a mid-scale mark means 'meets the requirement', the top mark means 'exceeds it with compelling evidence'.
- Quality usually carries 40–70% of the total evaluation, with price and social value taking the rest; the exact split is set out in the tender documents and varies by contract.
- Scores are moderated: evaluators mark independently, then a panel reconciles differences and records the reasons, so a bid must persuade several readers, not one.
- Under the Procurement Act 2023, your per-criterion quality scores are disclosed in the assessment summary — the document that explains, before standstill, exactly where you lost marks.
How it works
A quality score measures how well your non-price answers meet the published evaluation criteria. Evaluators read each technical response — method statement, delivery plan, risk and continuity, added value — and award a mark against a defined scale. Most UK public buyers use a 0–5 or 0–10 scale, with written descriptors that tell you what each level looks like. These descriptor bands are a common convention rather than a single legal standard, so the exact wording sits in each tender's assessment methodology.
On a typical 0–5 scale, the bands run roughly: 0 — no response or fails to address the requirement (often disqualifying); 1–2 — partially addresses it with material gaps; 3 — meets the requirement competently but without distinction; 4 — meets it well with good supporting evidence; 5 — exceeds it with compelling, specific proof of added value. The gap between a 3 and a 5 is where most contracts are won and lost. A 3 says you can do the job; a 5 says you understand the buyer's problem, have a differentiated approach, and can evidence that your method works.
Each criterion's quality score is then weighted. Quality commonly carries 40–70% of the total evaluation, with price and social value making up the balance; the documents state the precise split, which can run anywhere from 80% price / 20% quality to 80% quality / 20% price depending on the contract. Your raw mark is multiplied by the criterion weighting and summed, so a single low score on a heavily weighted question can sink an otherwise strong bid.
Quality scores are moderated, not taken at face value. Evaluators score independently first, then a moderation panel meets to reconcile any significant differences and agree a consensus mark, recording the reasons behind each final score. That audit trail is what a contracting authority must be able to defend if the award is challenged. Under the Procurement Act 2023, those agreed scores feed the assessment summary issued to every bidder before the standstill period — telling you, criterion by criterion, where you scored and why.
How a 0–5 quality score is typically interpreted
| Score | Descriptor | What it usually signals |
|---|---|---|
| 5 | Excellent | Exceeds the requirement with compelling, specific evidence and clear added value |
| 4 | Good | Meets the requirement well, with strong supporting evidence and few gaps |
| 3 | Acceptable | Meets the requirement competently but without distinction or differentiation |
| 2 | Minor concerns | Partially addresses the requirement; relevant detail or evidence missing |
| 1 | Significant concerns | Limited or weak response; major gaps against the requirement |
| 0 | Unacceptable | No response, or fails to address the requirement — often a disqualifying mark |
Under the Procurement Act 2023
Reviewed
Quality scoring itself is unchanged in mechanics, but the award framing has shifted. Procurements started before 24 February 2025 run under the Public Contracts Regulations 2015, where the winning bid was the most economically advantageous tender (MEAT). Procurements started on or after that date run under the Procurement Act 2023, which replaces MEAT with the most advantageous tender (MAT). Dropping 'economic' is deliberate: it confirms that quality, social value and wider benefit need not sit below price, so a strong quality score can carry more weight in the award decision. The Act also requires award criteria to be clear, measurable and proportionate, and requires per-criterion scores to be disclosed to bidders in an assessment summary.
Sources: Procurement Act 2023 (legislation.gov.uk) · GOV.UK — Guidance: Assessing competitive tenders · GOV.UK — Guidance: Assessment summaries
Why it matters for bidders
Most SME bids cluster at a 3 — technically adequate but undifferentiated. Moving from a 3 to a 4 or 5 across your weighted quality responses is often worth more than any price cut you could afford, because where quality carries 40–70% of the score, a single mark per criterion can outweigh a large discount. The quality score is where bid expertise compounds. The deeper signal sits in award data: from published assessment summaries and award notices you can see how incumbents actually scored against a buyer's criteria, which questions decided the contract, and where the winning margin came from — so you write to the marks that matter, not the marks you assume. That discipline, drawn from teams who have won £3bn+ in UK and EU public contracts, is what turns a competent answer into a top-band one.
How Skim helps
Skim's Bid Analysis agent maps each of your draft answers to the published evaluation criteria and scoring descriptors, flagging where a response reads as a 3 and what specific evidence would lift it to a 5 — calibrated using language and proof structures from 40 years of bid expertise. Its Competitor Analysis agent reads historical award data so you can see how winners scored against the same buyer before you commit.
Frequently asked questions
- What is a quality score in a tender?
- A quality score is the mark a public sector evaluator gives to the non-price parts of a bid — such as method, delivery plan, risk management and added value — assessed against the published award criteria. It is usually awarded on a 0–5 or 0–10 scale and then weighted to form part of the total evaluation.
- How is a tender quality score calculated?
- Each quality criterion is scored against a defined scale with written descriptors, commonly 0–5 or 0–10. The raw mark is multiplied by that criterion's weighting and the weighted marks are summed. Combined with the price and social value scores, the total decides which bid is the most advantageous tender.
- What percentage of a tender is quality versus price?
- There is no single standard — the split is set in each tender's documents and varies by contract. In UK public procurement, quality commonly carries 40–70% of the total evaluation, with price and social value taking the rest. Some contracts weight quality as high as 80%, others as low as 20%.
- What does a score of 3 out of 5 mean in a tender?
- On a typical 0–5 scale, a 3 means the response meets the requirement competently but without distinction or added value. It confirms you can do the job, but it is not a winning mark. The higher bands, 4 and 5, are reserved for answers that exceed the requirement with strong, specific evidence.
- What is moderation in tender scoring?
- Moderation is the process where individual evaluators first score a bid independently, then meet as a panel to reconcile significant differences and agree a consensus mark for each criterion. The reasons for each final score are recorded, creating the audit trail a contracting authority needs to defend the award if it is challenged.
- Will I be told my quality scores if I lose a tender?
- Yes. Under the Procurement Act 2023, contracting authorities must issue an assessment summary to every bidder before the standstill period. It sets out your score against each criterion with reasons, plus the winning bidder's scores, so you can see exactly where you lost marks.
Sources
Related terms
Evaluation criteria
Evaluation criteria, called award criteria under the Procurement Act 2023, are the factors and weightings a buyer publishes to score tenders — covering quality, methodology, staff, price and social value — and decide the most advantageous tender. Criteria must relate to the subject-matter of the contract.
Most economically advantageous tender(MEAT)
The most economically advantageous tender (MEAT) is the legacy award basis under the Public Contracts Regulations 2015, requiring buyers to award on the best combination of quality and price rather than lowest price alone. The Procurement Act 2023 renames it the most advantageous tender (MAT).
Win themes
Win themes are the three to five recurring messages woven through a tender response that tie a genuine differentiator to a buyer's stated priority and frame it as a benefit. Win themes answer the evaluator's underlying question — why choose this supplier for this contract — rather than listing capabilities.
Social value
Social value is the wider economic, social, and environmental benefit a supplier's delivery of a UK public contract generates beyond the goods or services bought — local jobs, skills, carbon reduction, community impact. Central government must score it at a minimum 10% weighting of the total evaluation.