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English Word Level Database

The English Word Level Database (EWLD) is a digital platform for vocabulary teaching, learning, and research, built upon two major international language standards.

Test Data Analyzer

Test Data Analyzer (TDA) is a specialized web-based tool designed for in-depth statistical analysis of educational exam data.

It is built on Item Response Theory (IRT) , a modern framework for understanding the relationship between a student’s ability and their performance on individual test questions.