3,000-Item Resource Library — IB Diploma & Cambridge IGCSE, Dual-Aligned Across Three Regions
An international school group operating across Australia, the UK, and Southeast Asia needed a single resource library that worked across two of the world's most demanding qualifications — IB Diploma and Cambridge IGCSE — simultaneously. Vaidik Eduservices built the complete dual-aligned bank in 16 weeks.
One Group, Two Qualifications, Three Regions — One Content Problem
The client operated a group of 11 international schools across Sydney, Melbourne, London, Singapore, and Kuala Lumpur. Unlike single-country independent schools, their curriculum department faced a structural challenge: roughly half their Year 10–12 students were on the IB Diploma pathway, and the other half on Cambridge IGCSE — and the split varied by campus.
Their teachers were creating resource materials independently on each campus — building the same content twice, in slightly different formats, with no shared quality standard. The curriculum director wanted a centralised question bank and resource library that teachers across all 11 schools could draw from, regardless of which qualification pathway their students were on.
The critical requirement: every item in the library had to be genuinely useful for both pathways — not IGCSE items with an IB tag bolted on, and not IB-style extended-response questions that IGCSE students couldn't use. True dual alignment demanded that items be designed from the syllabus overlap between both programmes, with clear coding for which components each item served.
Dual Alignment Is Harder Than It Sounds
IB Diploma and Cambridge IGCSE are both rigorous international qualifications — but they assess differently. Building content that genuinely serves both required systematic syllabus analysis before a single item was written.
Two Assessment Philosophies — One Item Bank
IB Diploma emphasises conceptual understanding, international-mindedness, and Theory of Knowledge connections. IGCSE is more modular and specification-driven. Items that served both programmes had to sit in the genuine syllabus overlap — not be watered-down versions of either.
Dual Coding Every Item — Without Creating Confusion
Every item needed to carry both an IB syllabus code (e.g. HL topic, SL topic, assessment objective) and a Cambridge IGCSE code (syllabus component, learning objective). The coding had to be unambiguous enough for teachers to filter by either system without confusion.
Regional Context Consistency Across 3 Regions
Items using contextual examples — Geography case studies, History events, Economics scenarios — had to feel relevant to students in Sydney, London, and Singapore simultaneously. Regional-specific examples were appropriate only where the syllabus explicitly called for local case studies.
Teacher Usability Across 11 Campuses
The library had to be usable by teachers regardless of which programme they were teaching. Mark schemes needed to explain both IB-style criterion-based marking and IGCSE point-based marking where the same item appeared on both pathways.
How Items Were Coded Across Both Programmes
Each item carried explicit codes for both qualification systems — making it immediately usable by IB and IGCSE teachers without re-interpretation.
Assessment Objective 3 (Analysis/Evaluation) · Data-based question · Paper 1 style · Command term: Analyse
Assessment Objective 1 (Knowledge) · Short-answer · Paper 2 (with GDC) · Command term: Calculate
Assessment Objective 2 (Application) · Structured question · Paper 1 style · Command term: Explain
Learning Objective B2.3 · Data response · Paper 4 (Core/Extended) · AO2: Handling information
Learning Objective C7.1 · Structured calculation · Paper 4 (Extended) · AO1: Apply standard techniques
Learning Objective 1.3 · Short structured · Paper 2 · AO2: Apply knowledge and understanding
Six Subjects — Dual-Coded Across IB & IGCSE
Biology
Cell biology through ecology — IGCSE 0610 and IB Biology HL/SL Topics 1–11. Includes data-based questions for both IB Paper 1 and IGCSE Paper 4 styles.
Mathematics
IGCSE 0580 Extended and IB Mathematics AA/AI SL/HL — separate item sets for calculator and non-calculator contexts, dual-coded across both syllabi.
English Language & Literature
IGCSE 0990 (First Language English) and IB Language A Literature SL/HL — unseen analysis, directed writing, and language analysis items with dual mark schemes.
Economics
IGCSE 0455 and IB Economics HL/SL — micro and macroeconomics items with policy application scenarios relevant across the three school regions.
History
IGCSE 0470 and IB History HL/SL — 20th Century topics, source analysis, and extended essay prompt starters dual-coded across both programmes' assessment objectives.
Geography
IGCSE 0460 and IB Geography SL/HL — fieldwork-linked questions, case study items (internationally neutral), and data response questions for both exam styles.
Syllabus Overlap Analysis First — Then Item Writing
We built a formal syllabus overlap matrix for every subject before writing a single item. This identified the content areas where genuine dual alignment was possible — and the areas where separate items were needed. Both were handled, and both were included in the final library.
Syllabus Overlap Analysis — All 6 Subjects
Compared IB Diploma and Cambridge IGCSE syllabi side by side for each subject. Produced an overlap matrix showing: full overlap (genuine dual-alignment possible), partial overlap (items with separate mark scheme paths), and divergent content (IB or IGCSE specific — excluded from the dual-aligned bank).
Dual Coding Framework & Item Templates
Built the dual-coding taxonomy — IB assessment objective codes and IGCSE assessment objective codes embedded in every item template. Agreed the mark-scheme format for items that required separate IB and IGCSE mark-scheme sections within the same document.
Parallel Item Development — Six Subject Teams
Six subject teams produced items simultaneously, each working from the approved overlap matrix. Bi-weekly cross-subject reviews checked dual-coding accuracy and mark-scheme completeness. Items that failed the dual-alignment check were revised to single-programme items and flagged accordingly.
Final QA, Alignment Matrix Delivery & QTI Export
Complete library reviewed by an IB and Cambridge examiner respectively. Final QTI 2.1 export packaged with the dual-alignment matrix, subject-level item lists, and teacher usage guide. Full delivery Week 16.
3,000 Items. 16 Weeks. Deployed Across 11 Schools.
The library launched across all 11 campuses at the start of the new academic year — used by IB and IGCSE teachers simultaneously from day one.
"We had teachers on different campuses building essentially the same materials twice because we had no shared resource base. Vaidik gave us the one library that works for both our pathways. The dual-coding is genuinely useful — teachers can filter by IB topic or IGCSE component and trust the items that come up actually fit. That's surprisingly rare."
— Director of Curriculum, International School Group
- Syllabus overlap matrix delivered before item development began — client's curriculum team could verify the scope before production commitment
- Items that couldn't be genuinely dual-aligned were flagged as single-programme and included separately — no false alignment claims
- Mark schemes include both IB criterion-based and IGCSE point-based formats within the same document where applicable
- Internationally neutral contextual examples used throughout — no items required regional editing for use across Australia, UK, and SE Asia
- QTI 2.1 export validated against the school group's LMS — imported without errors across all 11 campus systems