Pros
Your development and opportunities are largely linked to your Line Manager. There are Line Managers and Leaders who genuinely want their team/people to succeed and would actively support and nurture their development. The salary is largely good for a not-for profit organisation, due to the Unions intervention. Brilliant Pension contribution. Support for medical conditions and appointments is fantastic. The people who do all the work are fantastic and supportive, and care about their work and the outcomes for teachers, students and school staff.
Cons
You can become stagnant if you end up with a Line Manager who is unskilled and only looks out for their own skin. There are pockets of poor leaders and Line Managers in the organisation. Access to equal learning and development opportunities do not exist. Most Leaders are ego centric and disengenious. Decisions are slow due to the CEO not empowering the Leaders. The CEO is a former UK politician, who is unkind to his direct staff and has zero empathy for people - he leads with self-interest, is unkind and lacks empathy. He puts on a convincing show for the public though. Depends on where you work in the organisation, work life balance does not exist - most employees are overworked, as the organisation is under resourced.