Two other polytechnics, Temasek Polytechnic and Nanyang Polytechnic were established in the 1990s. Public institutions includes universities, polytechnics, community colleges and teacher training institutes. Tertiary institutions include public and private universities, polytechnics, and colleges of education. This section lists defunct universities, university colleges, polytechnics and colleges of federal universities. Some smaller polytechnics in the North Island, such as Waiarapa Polytechnic, amalgamated with UCOL. These institutions are equivalent to British polytechnics that have become universities. Polytechnical schools (polytechnics) in Nigeria are not considered universities. All universities, and most polytechnics and colleges of education have a students association. The German higher education system comprises two forms of academic institutions&colon; universities and polytechnics (Fachhochschule). In 1992, the distinction between universities and polytechnics was abolished. There are a number of ITIs, polytechnics, defence coaching center and medical colleges also. There are two universities and several "polytechnics" in the town. Besides SIT@Dover, SIT has campuses at the various polytechnics in Singapore. There are also 11 polytechnics and 23 higher education institutions, of which 19 are private. Hatfield was also, in that year, one of eight polytechnics accredited for research degrees.