Certification in Business
Senior 3 · Entrepreneurship
Certification in Business
Lesson 1 of 4
23 min
A boarding school in Muhanga invites suppliers to bid to deliver 20 tonnes of maize flour for the school year. Its notice ends: “Only flour bearing the S-Mark of the Rwanda Standards Board will be considered.” Two millers bid. The first says, truthfully, that his flour is good. The second shows a certificate proving that an independent body has tested her flour and inspected her mill, and that both meet the Rwandan standard. Only the second can win. The school and millers are illustrative.
The difference between them is certification. In Senior 1 you learned what standards are, and in Senior 2 how products are measured and tested. This unit asks how a business proves that it meets standards, and how it manages quality so that it keeps meeting them.
Definition
Quality: how well the features of a product or service meet the needs and requirements of the customer and the standards that apply. A good-quality product is fit for its purpose, every time.
Certification: in the words of the Rwanda Standards Board (RSB), “a third-party attestation following assessment that attributes, characteristics, quality, or status of individuals or organizations, goods or services, procedures or processes are in accordance with established standards.” Third-party means that the check is made by an independent body, not by the seller or the buyer.
Definition
Quality control (QC): checking finished products, or samples of them, against a standard, and removing those that fail. It finds faults.
Quality assurance (QA): planned activities that make sure the process is right, so that faults do not happen: written procedures, trained staff, clean and calibrated equipment, checks on raw materials. It prevents faults and gives confidence that requirements will be met.
Quality management (QM): the whole set of coordinated activities by which an organisation directs and controls quality: its quality policy and objectives, planning, assurance, control and continual improvement.
Total quality management (TQM): an approach in which every person in the organisation, from the owner to the cleaner, is responsible for quality and for improving it all the time.
| Quality control | Quality assurance | Quality management | |
|---|---|---|---|
| Main question | Is this product right? | Is our process able to produce it right every time? | Is our whole organisation run to deliver quality? |
| Focus | the product | the process | the system and people |
| When | after production | before and during production | all the time |
| Example in a flour mill | weigh and test samples of bagged flour; reject underweight bags | check that maize is dry before milling; clean the sieves on a schedule; calibrate the scale | a quality policy, trained staff, records, customer feedback and regular reviews |
Tip
Memory hook: Control catches, Assurance avoids, Management makes it a habit. QC catches faults after they happen; QA avoids them by controlling the process; QM makes quality the way the whole business works.
Worked example 1: QC, QA or QM?
| Activity at a soap factory | Type |
|---|---|
| Testing a sample bar from each batch for its pH | quality control |
| Writing a step-by-step mixing procedure and training every worker to follow it | quality assurance |
| Rejecting a delivery of oil that fails the purity check | quality assurance (checking inputs prevents faulty soap) |
| The owner sets a yearly target to halve complaints and reviews progress each quarter | quality management |
| Throwing out bars that crack in the mould | quality control |
The factory is illustrative.
Worked example
Worked example 2: measuring the effect of quality assurance (illustrative figures)
A miller’s quality control finds 18 faulty bags in a sample of 600. She then adds quality assurance: maize is checked for dryness and the sieves are cleaned every shift. The next sample of 600 has 6 faulty bags.
Defect rate before: . After: .
Fall in defects: Two thirds fewer faulty bags, which means less waste, fewer complaints and lower costs. Inspection alone would only have caught the faults; assurance stopped most of them happening.
Warning
Common mistakes. (1) Using “quality control” for every quality activity: control inspects products, assurance prevents faults. (2) Thinking certification is something a firm can give itself: it must come from an independent third party such as RSB. (3) Thinking quality means “expensive”: a cheap product is good quality if it does reliably what it promises.
Practice
Sources and credits
Written by Ganzaa: the school case, the nested-box diagram, the tables, the worked examples and the practice items. The people, businesses and figures are illustrative (2026).
