Employees in the same company rarely have exactly the same English level. Even people with similar job titles may differ in speaking confidence, listening ability, grammar accuracy, writing speed and experience with international clients.
This creates a practical question for HR and managers: can they learn together, or will a mixed-level class waste time and budget?
The honest answer is that mixed-level training can work, but not automatically. Success depends on the size of the level gap, the communication goals employees share, the design of the tasks and the amount of individual support available.
Grouping everyone together because they work in the same department is risky. Separating every learner into private lessons can also be unnecessarily expensive and remove useful peer practice. The right decision begins with assessment.
“Level” is not one simple number
A placement result such as A2, B1 or B2 is useful, but it does not describe every skill equally.
One employee may:
- understand meetings at B2 level;
- speak at B1 level because of hesitation;
- write concise emails effectively;
- struggle with unfamiliar accents.
Another may:
- speak fluently and confidently;
- make frequent accuracy mistakes;
- understand familiar clients well;
- struggle to read detailed reports.
If both receive the label “B1,” a manager may assume their needs are identical. They are not.
A strong assessment should therefore consider both proficiency and performance. What can each employee do now, and what must they do at work?
When mixed-level training can work well
The participants share recurring communication situations
A group of support agents may all need to clarify problems, explain steps and close cases, even if their language levels differ slightly. Shared tasks create a useful centre for the programme.
The level gap is manageable
Adjacent levels, such as strong A2 to B1 or B1 to B2, can sometimes work together in a small group. The instructor can adjust language complexity while keeping the business task consistent.
The group is small
In a small class, the teacher can give different prompts, monitor participation and provide targeted feedback. As the group becomes larger, mixed levels become harder to manage and individual speaking time falls.
Tasks allow different levels of performance
A single role-play can challenge learners differently. During a project update:
- the lower-level learner may follow a prepared structure and communicate three key facts;
- the intermediate learner may explain cause, impact and recommendation;
- the advanced learner may respond to challenge, interruption and uncertainty.
Everyone practises the same workplace function, but not at the same linguistic depth.
Learners feel psychologically safe
Employees must be able to make mistakes without embarrassment or damage to status. This is especially important when managers and direct reports learn together. A senior employee with weaker English may avoid participation if the environment feels evaluative.
When employees should not be placed in the same class
The level gap is too large
An A1 beginner and a confident C1 professional do not need the same lesson. The beginner may understand very little, while the advanced learner receives no meaningful challenge.
Their job goals are unrelated
A finance manager preparing for investor presentations and a warehouse employee learning basic safety communication may work for the same company but require different content.
One participant has an urgent, high-stakes goal
An executive preparing for a negotiation next month may need private training, even if they could technically join a group. Urgency and confidentiality can justify a different format.
The hierarchy prevents honest practice
A learner may not want to role-play a difficult conversation or reveal a weakness in front of a manager. In some teams, shared training builds connection. In others, it reduces participation.
Scheduling creates inconsistent attendance
A group class depends on a common rhythm. If half the group frequently misses sessions because of shifts or client work, the course becomes fragmented.
Group by communication need, not department alone
Department is one useful factor, but it should not be the only one.
A better grouping decision considers:
- current proficiency;
- target proficiency or performance;
- role and recurring tasks;
- urgency;
- schedule;
- confidence and group dynamics;
- preferred learning format.
For example, a company may create one group for client-facing B1 employees from sales and account management because they share discovery, presentation and follow-up needs. A B1 operations employee might join a different group focused on instructions, updates and risk reporting.
The language level is similar, but the communication purpose is different.
Role-based targets are more useful than “everyone should reach B2”
Companies often choose one target level for all employees. That can be simple to administer but may not reflect the work.
A receptionist, technical specialist, account director and CEO use English differently. The relevant question is not only “What CEFR level should they reach?” but “What tasks should they perform at the required standard?”
Examples of role-based outcomes include:
- a support agent can clarify a problem and give a five-step solution;
- a salesperson can run a discovery call and summarise the need;
- an operations coordinator can report delay, impact and action;
- a manager can lead a meeting and handle disagreement;
- an executive can present a recommendation and answer difficult questions.
CEFR remains valuable as a common framework, but role performance gives the level practical meaning.
Differentiated instruction in a mixed-level class
Differentiation means learners work toward a shared objective with different levels of support or complexity.
Different input
The instructor may provide a shorter, clearer text to one learner and a more detailed version to another.
Different preparation
A lower-level learner receives a phrase bank or planning template. A stronger learner prepares with fewer prompts.
Different output
One learner gives a one-minute update. Another gives the update and handles follow-up questions.
Different feedback
For one learner, the priority may be intelligibility and basic structure. For another, it may be nuance, concision and diplomatic tone.
Different homework
Learners can complete role- and level-specific practice between shared sessions.
Differentiation does not mean running six separate classes at the same time. It means designing one task with multiple entry points.
Peer learning can be valuable — when managed correctly
Group training offers benefits that private training cannot reproduce fully.
Employees can:
- hear different ways to express an idea;
- practise turn-taking and real interaction;
- learn from colleagues’ questions;
- build shared terminology;
- develop common communication standards;
- encourage one another and create accountability.
However, the strongest learner should not become the unpaid assistant teacher. They still need challenge and feedback. Nor should the lower-level learner depend on constant translation from colleagues.
The instructor must manage speaking time and task roles carefully.
Avoid public ranking
Companies sometimes request detailed comparisons between employees. This can damage engagement and psychological safety.
Assessment should inform programme design, not label people publicly as “weak” or “strong.” Reports can show individual starting points and progress while protecting appropriate confidentiality.
Managers need enough information to support the programme, but learners should understand how results will be used. Training is more effective when assessment is seen as guidance rather than punishment.
A blended structure may be the best answer
The choice is not always group or private. A small company can combine formats.
Examples include:
- group sessions for shared meeting skills plus private coaching for a manager;
- paired training for two account managers plus self-study for grammar gaps;
- one small team programme with occasional individual feedback sessions;
- separate foundation support for beginners before they join a group;
- a four-week pilot followed by regrouping based on progress.
This allows the company to preserve team practice while addressing significant individual needs.
How to assess participants before grouping
A useful pre-course process may include:
A structured language assessment
This establishes a broad CEFR-aligned starting point across skills.
A speaking interview
A live conversation reveals fluency, listening, confidence, interaction and the ability to respond without preparation.
A needs questionnaire
Employees identify where they use English, what they avoid and what they want to improve.
A manager or company consultation
The organisation explains business goals, recurring situations and performance expectations.
A grouping review
The academic team compares level, role, schedule and goals before recommending private, paired or small-group training.
The order matters. The company should not choose the group first and test later merely to confirm the decision.
How to know whether the group is working
Watch for signs during the first weeks.
Positive signs:
- all learners receive meaningful speaking time;
- stronger employees remain challenged;
- lower-level employees understand the core task;
- attendance is consistent;
- feedback relates to individual priorities;
- learners can apply class language at work;
- the group supports rather than intimidates participants.
Warning signs:
- one person dominates every activity;
- beginners are repeatedly lost;
- advanced employees finish quickly and disengage;
- the teacher spends most of the lesson translating;
- role-specific needs receive little attention;
- attendance gaps make progression impossible.
Regrouping is not a failure. It is evidence that the programme is responding to real data.
Questions HR should ask a provider
Before approving mixed-level training, ask:
- How do you assess each participant?
- What level gap do you consider manageable?
- How many learners will be in the class?
- How do you differentiate tasks and feedback?
- What happens if the group is not working?
- Can you combine group and private support?
- How will managers see progress?
- How do you protect learner confidence and assessment privacy?
A provider that promises one class will work for everyone without assessment is avoiding the hardest part of programme design.
Lumin’s approach to different levels
Lumin conducts a separate placement assessment for each participant and combines the results with the company consultation before recommending the learning structure. The available formats include private training for one learner, shared training for two colleagues and Team Pro for a small team of up to six.
The goal is not to force employees into a standard package. It is to identify whether their levels, roles and communication needs are compatible enough to learn together effectively.
Different levels are normal. Ignoring them is the problem.
See how Lumin designs Business English training for teams
