Banksy artwork on primary school

The transcript describes a primary school's experience with a mural created by Banksy. Initially, the school wrote to Banksy, not expecting a response. However, they were surprised to find a mural on their wall, which delighted both the school and the community. The school plans to preserve the mural with perspex and allow children to add their own artwork as overlays.

What was the significance of the mural for the children at the school?

What future plans were mentioned regarding the mural and the children's involvement?