Hands UP Foundation- This charity that carries out awareness-raising events in the UK and also runs projects in Syria. It could be a charity that schools raised funds for. There is a good PowerPoint explaining the civil war for primary and secondary under school assembly plans.
Assemblies For All- Provided by the charity Humanists UK
Refugee Week Resources- There are a number of lessons, activities and assemblies here that can be used for Refugee Week or adapted for use any time of the year.
RISC- have assemblies entitled: What/Who is a refugee? and Myth Busting. Reading International Solidarity Centre
Christian Aid- ready-to-use assembly, Far from Home
Secondary School / age 11-18
Inviting a Speaker