The Global Scale of English (GSE) is an English proficiency index developed by Pearson. It is fully compliant with CEFR* and allows you to accurately understand your candidates' English ability. Using 1-point increments, on linear scale from 10-90, you can answer questons such as "How much English proficiency is required for this job'' and "What can you do with your current English proficiency?''. All Pearson solutions are based on the GSE.
*The Common European Framework of Reference for Languages (CEFR) is a global index for describing language proficiency. It sets out 6 levels, from A1 (beginner level) to C2 (native level), indicating what you can do in a language and at what level.