All school pupils in Wales study Welsh as a first or second language for 12 years, from the ages 5 to 16. The first school to use Welsh as the medium of instruction was set up in Aberystwyth in 1939. There are currently about 448 primary schools and 53 secondary schools in Wales that teach entirely or mainly throught the medium of Welsh. There is also a Welsh-medium school in London. Some courses at Welsh universities and colleges are taught through Welsh, and there are numerous Welsh courses for adults throughout Wales.