Supply Teaching vs Permanent Teaching

Choosing between supply and permanent teaching is rarely as simple as flexibility versus security. Both involve real trade-offs, and the right answer depends heavily on where you are in your career, your personal circumstances, and what you actually want from your working life.

This article sets out the honest differences — pay, workload, professional development, continuity, and career trajectory — to help you make a more informed decision.

The starting point matters. The comparison looks different depending on who is making it.

Research commissioned by the Department for Education found that most supply teachers are not new to the profession. The majority have held permanent posts, often for many years. Over half reported leaving permanent positions due to high workload or stress. Many are not choosing supply over permanent teaching in the abstract — they are choosing it over a specific permanent role that was no longer working for them.

That context shapes the comparison. The question is often not “supply or permanent?” in general terms, but “this supply arrangement, or that kind of permanent post?” Those are different questions, and the answer to the second is more useful.

Permanent teachers in maintained schools are paid in accordance with the School Teachers’ Pay and Conditions Document (STPCD). Pay progresses through the Main Pay Range (M1 to M6) and, for experienced teachers who meet the threshold, into the Upper Pay Range (U1 to U3). The annual salary for a teacher on M1 outside London in 2025/26 is £32,916, rising to £51,048 at U3.

Permanent teachers also receive employer pension contributions into the Teachers’ Pension Scheme, statutory sick pay, maternity and paternity pay, and paid holiday within the school year.

Permanent teachers carry significant administrative and professional responsibilities beyond classroom delivery. Lesson planning, marking, assessment, reporting, parents’ evenings, staff meetings, CPD sessions, and pastoral responsibilities all form part of the role. Teacher workload has been a sustained concern in England, with successive surveys and reports consistently identifying it as a primary driver of attrition from the profession.

Day-to-day supply typically involves arriving at a setting, delivering pre-planned lessons using materials left by the class teacher, and leaving at the end of the day with no expectation of marking, planning, or administrative work.

Long-term supply is different. A teacher placed in a role for a full term or more takes on the full responsibilities of the post — planning, marking, assessment, and in many settings, parents’ evenings and reporting. The workload is comparable to a permanent post for the duration.

Day-to-day supply genuinely reduces workload relative to permanent a post. Long-term supply does not. If workload reduction is your primary goal, the type of supply arrangement matters enormously.

Permanent staff have access to in-school CPD, performance management systems, and clear progression pathways. They can apply for TLR payments, leadership responsibilities, threshold progression, and promotion. The career structure in a permanent post is visible and navigable.

Supply teachers typically have no automatic access to in-school CPD, no performance management cycle that leads to progression, and no TLR or leadership pay without taking on a permanent or long-term contracted post. Teaching unions including the NEU offer CPD resources and professional support for supply members, but the professional development infrastructure that permanent staff take for granted is largely absent.

Permanent teaching provides substantially more support for career development. For supply teachers with ambitions to move into leadership or specialist roles, this is a genuine limitation that requires active management rather than passive expectation.

This is one of the most significant differences, and one that affects professional satisfaction more than people often anticipate before they start supply work.

Permanent teachers build relationships with learners over months and years. They know their class, understand individual needs, and see progress over time. That continuity is one of the most commonly cited sources of professional satisfaction in teaching.

Day-to-day supply teachers rarely experience this. Each placement is largely self-contained. You may work with a year group you never see again. The absence of continuity is a practical reality of short-term work, and for some professionals it is harder to accept than they expected.

Long-term placements restore much of this continuity. A term-long placement in a class allows genuine relationships to form, and learner progress to become visible. For those considering supply, the type of placement matters significantly to this dimension of the job.

This is where supply teaching has the clearest advantage, and it is the reason most supply teachers cite for choosing or staying in supply work.

Permanent teachers work to a contracted timetable and directed time obligations. Annual leave falls within school holiday periods. Taking time off during term time is not an option. The rhythm of the year is fixed.

Supply teachers, particularly those doing day-to-day or short-term work, can choose when they work, which settings they accept, and whether to take on a booking. They can work intensively for stretches and take extended breaks between placements. They are not obliged to be in a particular setting unless they choose to be.

For professionals with caring responsibilities, health considerations, other professional commitments, or a genuine preference for variety over routine, this flexibility is substantial. The DfE’s 2024 research found that demand for flexible working arrangements is particularly high among teachers with young children or other caring responsibilities — and that the education system does not currently provide adequate flexible permanent options to meet that demand.

Supply teaching is genuinely more flexible. That flexibility is not without cost — in income predictability, benefits, and career development — but for many education professionals at certain stages of life, the trade-off is rational.

Permanent contracts provide employment rights that supply work does not. Unfair dismissal protection, redundancy rights, continuous service, and contractual sick pay are all features of permanent employment that supply teachers either do not have or have only in limited form.

Supply placements can end with very little notice. A long-term placement covering maternity leave ends when the permanent teacher returns. A day-to-day booking can be cancelled on the morning of the placement. There is no guarantee of work in any given week.

This instability affects financial planning, mortgage applications, long-term commitments, and general wellbeing. For some professionals it is manageable; for others it is a sustained source of stress that outweighs the flexibility benefits.

Neither supply nor permanent teaching is the right answer for everyone, or for the same person at every stage of their career.

Supply tends to work well for professionals who have flexibility as a genuine priority, who have financial resilience or a secondary income source, who are at a stage where breadth of experience matters more than depth, or who are using it as a deliberate bridge between permanent posts.

Permanent teaching tends to work better for those who prioritise income stability and employment benefits, who find professional meaning in long-term learner relationships, who want a structured career progression pathway, or for whom the workload, though significant, is manageable in the right setting.

Many education professionals move between the two over the course of a career. Supply after a demanding permanent post. Permanent after supply has served its purpose. The two are not mutually exclusive over a working lifetime.