It may be a partitioned data set where "GP" stands for "Group Policy" or "General Purpose" data. Security Recommendation
Since .rar files can execute scripts or contain malware if sourced from untrusted third-party sites: [KS] KS4 GP11.rar
In the UK curriculum, "KS4" stands for Key Stage 4 (Years 10–11). This file could contain "GP" (General Practice) or "Guided Practice" materials for a specific subject module. It may be a partitioned data set where