global scale of english (gse) is a test for learners of english as a second or foreign language. the gse is a list of can-do statements based on the common european framework of reference (cefr) for english. learners' abilities are rated on a 10-to-90 point scale for each of the four basic skills (speaking, listening, reading, and writing). a learner reaches a level on the scale when she or he can correctly perform 50% of the can-do tasks at that level. the education company pearson plc developed the scale.