GROW, OSKAR and Systemic: The Most Important Coaching Methods Explained
Coaching methods are structured conversation frameworks a coach uses to run a session. They differ in where they place focus, which questions they ask, and how fast they move to an outcome. Three methods dominate the German-speaking coaching market.
- GROW structures a session in four phases (Goal, Reality, Options, Will) and fits best for clear decisions and goals.
- OSKAR works solution-focused, with scaling questions and quick progress instead of long problem analysis.
- Systemic coaching views the client inside the web of family, team and organisation and works with circular questions.
Which method fits when depends on the client's question. The sections below show the origin of each method, a practical example, and a direct comparison applied to the same client case.
What is the GROW model in coaching?
The GROW model is a four-step conversation structure for goal-oriented coaching, developed in the late 1980s in the United Kingdom. Sir John Whitmore, Graham Alexander and Alan Fine were working on performance-coaching programmes for clients like McKinsey at the time. Whitmore documented the model in 1992 in his book Coaching for Performance, now in its fifth edition (Performance Consultants). That matters because GROW became the most-cited coaching framework worldwide and forms the entry point in many Swiss academic continuing-education programmes.
GROW stands for Goal, Reality, Options and Will. In the first phase, you and the client define a concrete goal for the session, not for life. In the second phase, you both examine the current reality, what is already working and what stands in the way. In the third phase, the client develops their own options without you proposing solutions. In the fourth phase, the client commits to a first step within a concrete timeframe.
The method is linear and predictable. Exactly that makes it valuable for beginners. You do not lose the thread, the client understands the flow, and outcomes become measurable. In corporate coaching, GROW is therefore the standard, because HR leaders know the model and ask for clear outcomes.
What does OSKAR mean in coaching exactly?
OSKAR is a solution-focused coaching model, developed by Mark McKergow and Paul Z. Jackson and published in 2002 in their book The Solutions Focus: Making Coaching and Change SIMPLE (sfwork.com). That matters because OSKAR shifts attention away from the problem and toward the desired future, which often works faster than classical problem analysis for clients with a long history of struggle.
OSKAR stands for Outcome, Scale, Know-how, Affirm + Action, and Review. In the Outcome phase, you clarify how the client will recognise that the problem is solved. In the Scale phase, you ask where the client stands today on a scale from zero to ten. The Know-how phase surfaces resources and successes that are already present. Affirm and Action name what works and define small next steps. Review closes the cycle by checking what has moved in the following session.
The central lever is the scaling question. It makes abstract topics measurable and shows the client that they are not at zero. OSKAR is rooted in the solution-focused brief therapy of Steve de Shazer and Insoo Kim Berg, developed at the Brief Family Therapy Center in Milwaukee in the 1980s (Solutions Centre). The method fits especially when a client already has many explanations for their problem and gets stuck in analysis. Studies on the effectiveness of coaching show that shorter, focused formats work particularly well for clients who already have clarity on their goal.
What does systemic coaching actually mean?
Systemic coaching views the client not in isolation but as part of several systems: family, team, organisation, relationship. Behaviour and problems of a person emerge from the interactions in these systems, not from an inner trait. That matters because systemic work often finds solutions a purely individual coaching overlooks, for example when a problem at work is really a structural problem in the team.
The theoretical base comes from systemic family therapy, developed in the 1950s and 1960s at the Heidelberg school and the Mental Research Institute in Palo Alto. Central tools are circular questions ("What would your manager say if I asked her about your role?"), reframing, and working with hypotheses instead of diagnoses.
A systemic coach works less linearly than with the GROW model. She listens, formulates hypotheses, brings in perspectives the client cannot see alone. The process is more open and usually needs more sessions, but the changes are often deeper. In Switzerland, academic continuing-education programmes like the coaching programme at the IAP of ZHAW and further university certificates in integrative methods shape the systemic tradition. Total costs of such a university programme at IAP run to around CHF 30,000 (ZHAW coaching programme).
Also read: AI tools in coaching 2026: what really proves itself
How do the three methods play out in the same case?
The differences become concrete when three coaches with different methods receive the same client case. Imagine: Pia, 38, has worked for twelve years as a senior controller at a Swiss bank in Zurich. She is considering a move into sustainability consulting but does not dare. Salary, stability, family are the topics. How would GROW, OSKAR and systemic methods work?
| Dimension | GROW | OSKAR | Systemic |
|---|---|---|---|
| First question | What do you want to achieve in this session? | How will you know the decision has been made? | Who in your family or work system is affected by your decision? |
| Focus | Concrete session goal, clear options | Solution picture and scale (where you stand today, where you want to go) | Web of relationships, roles, expectations, loyalties |
| Typical session count | 4 to 8 | 3 to 6 | 8 to 15 |
| Strength in the case | Fast clarity over options and concrete next step | Makes progress measurable, builds self-efficacy | Reveals that fear of change partly stems from family role |
| Risk in the case | Can force solutions before Pia knows her true motives | Loses sight of deeper conflicts if Pia does not name them | Takes long, can keep Pia in consultation rather than decision |
| Probable outcome | Three options with pros/cons, decision in session 4 | Scale moves from 3 to 6, Pia acts in small steps | Pia recognises that stability is a family theme, not her own |
None of the three methods is wrong. They are calibrated differently. GROW delivers an outcome quickly, OSKAR builds change energy, systemic understands the deep structure.
How does an experienced coach choose between methods?
Experienced coaches often combine. Yvonne Frei has worked for fifteen years as a career coach in Basel and chooses the method not in advance, but within the first ten minutes of the initial session.
"I listen to what the client says in her first sentences. When someone comes with a clear question, like 'Should I make this job change or not,' I often work with GROW. That gives quick structure. When someone has been thinking in circles for months and already knows every argument, I switch to OSKAR. The scaling question breaks the mental carousel. And when I notice the person tells her story alone, without naming her environment, that is almost always a systemic session. The real question is then not in her but in a relationship."
Yvonne Frei, career coach Basel, fifteen years of practice.
This diagnosis is not a rigid rule. A session can start with GROW and end systemic when the client suddenly mentions her father. Methodological flexibility presupposes that you truly master more than one method. Exactly here beginners and advanced coaches diverge: beginners cling to a model because it gives security. Advanced coaches switch because the client needs it.
Also read: Types of coaching: Life, Business, Executive, Career and Health
Which coaching method is most effective?
Scientifically proven is the effect of coaching as a whole practice, not the superiority of any single method. The widely cited meta-analysis by Theeboom, Beersma and van Vianen from 2014 summarised 18 studies with a total of 2,267 participants and found a pooled effect of Hedges g = 0.66 on goal attainment, well-being and work attitudes of clients (Theeboom et al., 2014, Journal of Positive Psychology). That corresponds to a medium-to-large effect and is in the range of other effective psychological interventions.
This matters because many coaches overstate the effectiveness of their preferred model. The honest answer is: a method works when it fits the client. What counts is the match between concern, person and methodology, not the brand of the model.
In practice, this means: someone who runs four sessions of GROW cleanly will get a better outcome with a decision-ready client than a systemic coach who opens an open web in the same four sessions. Conversely, no GROW process will solve a family conflict disguised as a career question.
How can you tell as a client which method your coach uses?
As a client, you recognise the method by the questions in the first session. Three simple markers are enough.
- GROW markers: The coach asks early about a goal for the session, wants to know the current state, and pushes for a concrete first step at the end.
- OSKAR markers: The coach asks how you will know the problem is solved and asks you to place yourself on a scale from zero to ten.
- Systemic markers: The coach asks about people in your environment, formulates hypotheses rather than solutions, and asks circular questions ("What would your mother say if she were here?").
You can also ask directly. A good coach explains her method in two or three sentences. Whoever answers evasively or throws methods around without explaining them often has no clear line of their own. On bondigoo, coaches list their methodological focus directly in their profile, which makes the choice noticeably easier.
Is there a professional-body recognition for specific methods?
Internationally recognised coaching bodies certify coaches, not methods. Their tiered credential levels test the application of recognised coaching core competencies in a real coaching session, independent of the model used (recognised coaching body, Switzerland). This matters because many clients believe such a body singles out GROW or OSKAR as "real" coaching. It does not.
What these bodies test are behavioural markers: active listening, powerful questions, co-creating the relationship, direct communication, evoking awareness and facilitating client growth. A systemically working coach with recognised certification fulfils these markers just like a GROW coach with the same certification.
In practice, this means: a recognised certification says something about coaching quality but nothing about methodology. If you value a particular school, additionally ask about the training. Academic continuing-education programmes at Swiss universities like ZHAW or FHNW disclose the methodological grounding in the curriculum and deliver what a professional-body certification alone cannot cover.
How do you use this knowledge for choosing a coach?
Methodological understanding changes how you choose a coach. Instead of filtering by niche, hourly rate and friendly profile photo, you ask about the fit between concern and methodology. A clear career decision needs GROW or OSKAR. A recurring relationship or role pattern needs systemic work. An acute stress phase without diagnostic indication often needs solution-focused work because it makes you actionable quickly.
On bondigoo, you can filter coaches by methodological focus and recognise in the profile which training stands behind it. That matters because methodological choice becomes transparent in Switzerland, instead of disappearing behind marketing terms. Whoever experiences in the first session that the method fits the question gets to work faster. That is the whole point of coaching. Comparing coaching, therapy, counselling and mentoring also helps you recognise the right form of support before you commit to a method.
If you yourself work as a coach and want to communicate your method clearly in your profile, you have fields for primary method, secondary method and concrete use cases on bondigoo. Clients filter by them, which brings you the engagements that truly fit you.
FAQ
What is the GROW model in coaching? The GROW model is a four-step conversation structure (Goal, Reality, Options, Will). It moves the client from a clear goal through current reality and possible options to a committed first step. GROW fits especially decision- and goal-oriented concerns.
Who invented the GROW model? Sir John Whitmore, Graham Alexander and Alan Fine developed GROW in the late 1980s in the United Kingdom. Whitmore published the model in 1992 in Coaching for Performance. It was inspired by the "Inner Game" approach of Timothy Gallwey.
When does a coach use OSKAR instead of GROW? OSKAR fits when the client has already thought about their problem extensively and is stuck in analysis. The scaling question makes progress measurable and shifts focus to resources rather than deficits. GROW remains the better choice when the goal itself is still unclear.
What does systemic coaching mean exactly? Systemic coaching views the client in the web of family, team and organisation. Behaviour and problems emerge from interactions in these systems. Core tools are circular questions, reframing and working with hypotheses.
Which coaching method is most effective? The effectiveness of coaching is documented as a whole practice (Hedges g = 0.66 in Theeboom et al., 2014), not for any single method. What counts is the fit between concern, person and methodology. Experienced coaches combine multiple models depending on the situation.
How can you tell as a client which method your coach uses? By the first questions. GROW asks about a session goal and options, OSKAR about scale and solution picture, systemic about people in the environment and asks circular questions. You can also ask directly; a good coach explains her method in two or three sentences.
Is there a professional-body recognition for specific methods? No. Internationally recognised coaching bodies certify coaches by recognised core competencies, not by method. Their credential levels test behavioural markers in real sessions regardless of the model. Methodological schools are found in academic continuing-education programmes at Swiss universities.
References
- Whitmore, J. (2017). Coaching for Performance: The Principles and Practice of Coaching and Leadership (5th ed.). Nicholas Brealey. Background on the GROW model at Performance Consultants.
- McKergow, M. & Jackson, P. Z. (2002). The Solutions Focus: Making Coaching and Change SIMPLE. Nicholas Brealey. Model documentation on sfwork.com.
- De Shazer, S. & Berg, I. K. (1980s). Solution-focused brief therapy, Brief Family Therapy Center Milwaukee. Historical overview in the Solutions Centre PDF.
- Theeboom, T., Beersma, B. & van Vianen, A. E. M. (2014). Does coaching work? A meta-analysis on the effects of coaching on individual level outcomes in an organizational context. Journal of Positive Psychology, 9(1), 1-18. Tandfonline.
- Recognised coaching body Switzerland - certification.
- ZHAW coaching programme.
Ready to connect method and profile clearly? Get started on bondigoo and describe your methodological focus so clearly that clients see at first glance whether you are the right support for their question.