Faith at home includes Collective Worship resources for secondary and primary schools.  See there resources here

https://www.archbishopofyorkyouthtrust.co.uk/yla-free-resources Archbishop of York Youth Trust do free KS3 resources

http://www.creativeproverbs.com/  is a searchable site for proverbs/thoughts for the day around the world.

http://www.oxfam.org.uk/education/resources/  has resources for assemblies about third world and social justice issues.

http://learn.christianaid.org.uk/TeachersResources/secondary/ResourceOvervie w/assembly.aspx  for ready to use secondary assemblies;

Youth for Christ

Youth for Christ (YFC) have great resources that can be used and adapted for schools for young people to explore spirituality. Find them here

 

 

https://www.cdbe.org.uk/support-for-schools/resources/collective-worship-resources

 

On this page you will find the secondary school collective worship resources to help educate your pupils about modern slavery - 

https://www.modernslaveryeducation.com/senior-collective-worship

 

Designed particularly for affiliated secondary schools, there are ideas on this site for using a quotation as a starting point with suggestions for follow up questions - 

http://www.gloucester.anglican.org/schools/values-worship-re/collective-worship/thought-for-the-day.php

 

Here you can find many ideas, and assemblies with a  dedicated secondary section that can be used and adapted for collective worship - 

https://www.assemblies.org.uk/about/links/