internal demo conversion notes

KLEK rating conversion page

A working page for translating KLEK ratings into estimated GCSE grade bands, percentiles, and the next revision focus.

Not final calibration. Replace with real benchmark data later.

Rating to GCSE grade bands

900-1099GCSE 3bottom 24%

Number fluency and calculator basics

1100-1299GCSE 4top 62%

Ratio, fractions, and common algebra steps

1300-1499GCSE 5top 38%

Algebraic fractions, probability, and circle theorems

1500-1699GCSE 6top 24%

Proof, vectors, graphs, and mixed problem solving

1700-1899GCSE 7top 14%

Multi-step geometry and grade 7-8 exam technique

1900-2099GCSE 8top 7%

Harder algebra, functions, and non-routine reasoning

2100+GCSE 9top 3%

Sustained accuracy under mixed conditions

Example movement

Diagnostic: 1320GCSE 5

Week 1: 1368GCSE 5

Week 2: 1441GCSE 5

This week: 1472GCSE 5/6 border

Target: 1800GCSE 7

How this will improve

  • Use real diagnostic outcomes instead of placeholder ranges.
  • Separate calculator and non-calculator confidence.
  • Show uncertainty where the rating is close to a grade boundary.
  • Update conversion bands as more Year 10 students complete diagnostics.
Start a diagnostic