Dear colleagues, We are pleased to announce a spring school on symmetry and measurement in quantum field theory to be held during 7-11th of April, 2025, at the University of York (York, UK). This school is aimed at graduate students (Masters and PhD) and postdocs. Speakers include Chris Fewster, Doreen Fraser, Kasia Rejzner and Michele Schiavina. A description of the topics and aims of this school is given below. Registration is now open. There is no registration fee, but we ask registrants to write a brief description of their background and motivation for attending this school, which may be used as a selection criterion. To register, please fill out the form on our website.Those registering before the 15th of December 2024, will receive a reply before December 20th. More information on the spring school can be found on our website. For enquiries, please contact fill out the contact form on this site. This school is supported by the EPSRC. Kind regards, Chris Fewster, Kasia Rejzner, Daan Janssen (the organisers) <!--break--> Aims of the school: We will discuss the themes of measurement and symmetry in quantum field theory, including introductory lectures on the algebraic approach to QFT, and lectures on their philosophical aspects. Algebraic QFT places strong emphasis on algebras of local observables. Its clear conceptual and technical framework has led to important progress, such as the rigorous perturbative construction of quantized gauge theories, and has been a recent focus in quantum gravitation. The issue of measurement in QFT has long been a topic plagued by apparent paradoxes and inconsistencies; for example, an instantaneous wavefunction collapse is incompatible with relativity. Recently a new framework for understanding QFT measurement has been developed using insights from AQFT. While the emphasis on local observables has been highly successful in AQFT, some observables of interest for a quantum field are not well-localised. Examples include 'dressed', relational or asymptotic observables in QED, more general Yang-Mills theories and quantum gravitation. A related challenge concerns the quantization of field theories on manifolds with boundaries and corners. Finally, from an operational viewpoint, how can such 'semi-local' observables be measured? The Spring School aims to familiarise early career researchers with these recent developments and the necessary tools to tackle these challenges in fundamental quantum field theory research.