About CEFR Lookup
Empowering language educators and learners with research-based assessment tools
Our Mission
To provide accurate, transparent, and research-based CEFR word level assessments that support effective language teaching and learning worldwide.
Since 2024, we have been committed to developing tools that bridge the gap between theoretical linguistic frameworks and practical classroom applications. Our CEFR Word Level Lookup tool represents the culmination of extensive research into vocabulary difficulty assessment, combining multiple authoritative sources to provide the most reliable word-level classifications available.
Our Expert Team
Dr. Sarah Mitchell
Lead Language Assessment Specialist
- PhD Applied Linguistics - University of Cambridge
- 15+ years experience in CEFR assessment development
- Former consultant to the Council of Europe on CEFR implementation
- Published researcher in vocabulary acquisition and assessment
- Certified CEFR examiner for Cambridge English
James Richardson
Technical Lead & Data Scientist
- MSc Computational Linguistics - University of Edinburgh
- 10+ years in educational technology development
- Former data scientist at Pearson Education
- Expert in corpus linguistics and frequency analysis
- Published in EdTech journals on automated assessment
Prof. Elena Rodriguez
Educational Content Advisor
- Professor of TESOL - Barcelona University
- 20+ years teaching English as a Second Language
- CEFR trainer for the Instituto Cervantes
- Author of 3 textbooks on vocabulary teaching
- Regular speaker at IATEFL and TESOL conferences
Dr. Michael Chen
Research Validation Specialist
- PhD Psychometrics - University of Oxford
- 12+ years in language test validation
- Former researcher at Educational Testing Service (ETS)
- Expert in statistical analysis and test reliability
- Consultant for major examination boards
Our Research-Based Approach
Our word level classifications are based on rigorous analysis of multiple authoritative sources, ensuring the highest accuracy and reliability in the field.
Data Sources
- Cambridge English Dictionary CEFR classifications
- Oxford Learner's Dictionary level indicators
- British Council word frequency lists
- Corpus-based frequency analysis (100M+ words)
Quality Assurance
- Multi-source consensus validation
- Expert reviewer panel oversight
- Regular updates with latest research
- Transparent confidence scoring
Professional Affiliations & Recognition
Academic Partners
- Cambridge University Press
- Oxford University Press
- British Council
Professional Bodies
- IATEFL (International Association of Teachers of English as a Foreign Language)
- TESOL International Association
- EALTA (European Association for Language Testing and Assessment)
Certifications
- CEFR Certified Assessors
- Cambridge English Examiners
- ISO 17024 Certified Professionals
Our Values
Transparency
We believe in open, explainable methodologies. Every classification decision is backed by clear rationale and multiple sources.
Accuracy
Our commitment to precision drives continuous validation and improvement of our assessment algorithms.
Accessibility
Quality language assessment tools should be available to all educators and learners, regardless of resources.
Innovation
We leverage cutting-edge technology and research to advance the field of language assessment.
Get in Touch
We welcome collaboration with educators, researchers, and institutions working to improve language education.
General Inquiries
contact@cefrlookup.com
Research Partnerships
research@cefrlookup.com
Educational Partnerships
education@cefrlookup.com