Olivia Hartwell

GCSE Maths Teacher, Sheffield

Olivia Hartwell has taught GCSE Mathematics in Sheffield secondary schools for nine years, covering all three major specifications — AQA 8300, Edexcel 1MA1 and OCR J560. She holds a PGCE in Secondary Mathematics from Sheffield Hallam University and has spent the past four years as head of the mathematics department at her current school, where she introduced a structured interleaving revision programme in Year 10 that raised the proportion of students achieving grade 5 or above by eleven percentage points over two cohorts. Olivia's specialism is the Foundation/Higher tier borderline — the zone between grades 4 and 6 where the choice of entry tier, the selection of topics to prioritise and the management of exam timing combine to make the largest difference to outcomes. She is acutely aware of the transfer penalty: students entered at Foundation who could achieve grade 5 are capped at grade 5 and cannot access grade 6, while Higher-tier students who underperform on algebra or proof questions often score lower overall than they would have on Foundation. Her teaching decisions are built around that insight. Her specialist topics include circle theorems and their proof derivations, simultaneous equations across algebraic and graphical methods, and the timing strategy for the three GCSE Mathematics papers — particularly how to approach the non-calculator Paper 1 without becoming trapped on complex algebraic problems at the expense of accessible marks elsewhere. She writes for EduBoost about GCSE Mathematics revision, Foundation vs Higher tier decisions for Year 11 students, and how to structure the final six weeks before the exams for maximum impact. She also coaches teachers entering AQA marking for the first time through the standardisation process, drawing on her experience as a department head calibrating teacher assessment across mixed-ability Year 10 and 11 sets.