UK Teaching Jobs: Primary vs Secondary Schools

This is where the two phases diverge most noticeably.

Primary teachers are generalists. In most settings, you teach the same class across most or all subjects throughout the week. You develop deep knowledge of individual learners, their progress, and their personal circumstances. The relationships are close, sustained, and often emotionally rewarding.

Secondary teachers are subject specialists. You typically teach one or two subjects across multiple year groups, seeing many more learners in a week but for fewer hours each. Relationships are built differently, and pastoral connection depends more on form tutor responsibilities than subject delivery.

Neither is less demanding. The nature of the demand differs.

Both phases carry significant workload, but it is distributed differently.

Primary teachers carry the weight of curriculum breadth. Planning across multiple subjects, managing transition from one area of learning to another, and maintaining detailed knowledge of each learner’s development across all areas is a sustained cognitive load.

Secondary teachers face workload pressure from exam preparation, assessment, and marking at depth in their specialist subject. Departments with large cohorts in subjects with extended writing requirements, such as English or history, can carry particularly heavy marking loads.

Pupil to teacher ratios also differ by phase. The DfE reports a ratio of 20.8 learners per teacher in nursery and primary settings, compared to 16.7 in secondary schools. That difference in class size shapes the texture of the working day considerably.

Career pathways exist in both phases, but secondary settings tend to offer more structured opportunities for subject-specific progression.

Subject leads, heads of department, and curriculum leads are more prominent in secondary schools. These roles typically attract TLR payments and offer a clear route from classroom teacher to middle leader without requiring a full step into whole-school leadership.

Primary schools offer progression through subject leadership, phase leadership, and SENCO responsibilities, though the structures are often smaller and the number of available posts is more limited. Headship and deputy headship in primary schools can come earlier in a career than in secondary, precisely because the organisational scale is different.

Both phases accommodate flexible and part-time arrangements, though primary schools can find job sharing logistically more straightforward given the class-based structure.

Our article on full-time vs part-time teaching roles sets out the rights and pay implications of part-time work in detail. For those interested in the range of temporary arrangements available in both phases, the short-term teaching contracts article covers fixed-term and supply options.

Supply work exists in both primary and secondary settings, but the experience differs.

Primary supply tends to involve more generalised cover, often with a class you will stay with for the full day. Secondary supply typically means moving between subjects and year groups, which can feel more fragmented but also more varied.

Secondary shortage subjects, particularly maths, science, and computing, are in consistent demand across supply as well as permanent roles. SEND-experienced supply teachers are sought after across both phases.

There is no universal answer, and many education professionals move between phases over the course of a career. Some questions worth considering:

Neither phase is inherently more rewarding. The match between what the phase demands and what you find professionally meaningful is what matters.

Flexzo Teach connects education professionals with educational settings across both primary and secondary phases, as well as SEND, alternative provision, early years, and further education. Roles include short-term supply, long-term placements, and permanent posts.

You set your availability, phase preference, and rate expectations. Settings contact you directly, with no agency intermediary. You can explore the full range of what the platform offers on the platform features page before registering.