Meet the Trainers


David Cossey

David is an education consultant with long experience of working in and with schools. A teacher for 24 years, David started teaching in schools in 1986 and worked in London, Norfolk, Kent and Essex. The second half of his teaching career was as a senior leader and he held whole school responsibility for data, assessment and curriculum in two schools as Assistant Head teacher and as Deputy Head. David subsequently worked for both Essex and Norfolk County Council in partnership roles and as a Senior Adviser. David graduated from Sheffield University, gained an MA in Education from the UEA and has the NPQH qualification.

Outside work, David loves time with his family and is a long-term Norwich City season ticket holder.



Eileen C Donnelly

Eileen is the GL Associate in Northern Ireland with particular interest in combining and analyzing pupil data to build a profile as a learner enabling targeted interventions. Her work is driven by the passionate belief that developing ‘the whole child’ and understanding their specific barriers to learning is central to academic success. Prior to joining GL her work with the NIELB included school improvement, curriculum development and facilitation and mentoring support for Head Teachers and Pastoral Leaders. With qualifications including B.Ed., M.ED, diplomas in Guidance & Counseling and Neuro Linguistic Programming she has also studied at the Jensen Corporation in California and in Washington DC. Her research on school ethos, vision and values informed her work as Associate Lecturer at Queen’s University Belfast and Ulster University. Overseas work includes workshop facilitation for Head Teachers in Uganda and Kenya on school self-evaluation.


Nick Halliwell Paget

Nick is the GL Associate Trainer for the West of England. He is an Educational trainer with 23 years teaching experience; 15 of which have been in Senior Leadership roles. Graduating with a B.Ed. (Hons) in Early Years and Maths from the University of the West of England, Nick’s career has taken him to Kuwait, South Korea and The Philippines. His most recent role as Deputy Head (Academic) saw him as Head of Maths and in charge of assessment across the School. He has taught in both the Independent and maintained sectors in the UK and overseas with experience of teaching from Nursery to Year 8. He always ensures the child is at the heart of his decision making process and is passionate about providing each child with the opportunities they deserve; recognising the key role Assessment tools play in facilitating this.

Nick enjoys relaxing with his wife, two children and dog. He has recently purchased National Trust membership and having travelled extensively overseas, Nick and his family are now looking forward to exploring the UK.



Rebecca St. John

Rebecca is a school data specialist and experienced trainer. She started out as data manager in a large secondary school, ensuring the assessment data collected contributed to improvement of outcomes. More recently she was Principal Consultant for SISRA Ltd, supporting 1,600 schools across the UK in the management and analysis of their assessment data and exam results, through support, consultancy and training. She has extensive experience of helping schools make sense of ‘life after levels’, and a particular interest in ensuring assessment data leads directly to impact in the classroom.

Rebecca is a school governor with responsibility for PP and SEND students, and chairs the Curriculum, Teaching and Care Committee. She has two teenage boys, is a regular member of a pub quiz team and sings in a local choir.



Jonathan Thomson

Jonathan has spent over 30 years in education, working with schools in the UK and abroad to help them get the maximum benefit from the technology they have and the student assessment data produced. Jonathan spent much time working in the SEN sector, including chairing the BESA Special Needs Group for 7 years and serving on the BESA Executive Council. He joined GL Assessment in 2011 to manage the newly-acquired Pupil Attitudes to Self and School survey (PASS), working closely with schools, academies and local authorities, providing customer support and training. More recently this role was broadened out to encompass GL Assessments’s entire portfolio of assessments. Jonathan is now a Senior GL Assessment Associate Trainer, running regular Assessment Insight Sessions (AIS) and other workshops nationally, as well as providing specialised PASS support as and when needed.