Foundation vs Higher tier (GCSE)

What is foundation vs higher tier (gcse)?

GCSE Maths and the GCSE Sciences are tiered: Foundation tier covers grades 1–5, Higher tier covers grades 4–9. A school enters each student for one tier per subject; students can score the maximum of the entered tier but not above. Foundation papers are not the same as Higher with hard questions removed — there is a Foundation/Higher overlap in middle-grade content but the styling and pacing differ.