original: international english language testing system , is an international standardised test of english language proficiency .
simplifications: the international english testing system is a standardised test of english proficiency . international english language testing system , is an international made regular test of english language power . international english language testing system , is an international standardized test of english language proficiency . the standard test for english language proficiency is the international english language testing system . international english language testing system , is a standard international test of english language skills . international english language testing system -lrb- ielts -rrb- , is an international standardised test of english language competence . one international standard test of skill with english is the international english language testing system . international english language testing system , is an international standardised test of english language proficiency .