This data provides information on students taught through the medium of Welsh at Higher Education Institutions in Wales. The Higher Education Statistics Agency (HESA) collect data on students, staff and resources of higher education institutions (HEIs) in the UK. The data presented in this table is taken from HESA's Student Record which contains information on all students enrolled on credit bearing courses at UK HEIs. Further information about HESA and their data collections can be found on their website www.hesa.ac.uk The Student Record contains information about individual enrolments, which, because a student can be enrolled on more than one programme of study, will exceed the number of students. However, previous analysis has shown that for Welsh HEIs full-time enrolments are less than 1 per cent higher than full-time student numbers; part-time enrolments are less than 2 per cent higher than part-time student numbers. Postdoctoral students are not included in the HESA Student Record. Students being taught through the medium of Welsh are defined as students studying at least one module with a non-zero proportion of teaching through the medium of Welsh. See dimension notes for more detail.