An extension to that deadline in October meant that Immigration NZ "experienced an unplanned increase in applications on an unprecedented scale", with more than 8,300 student visa applications lodged at the Mumbai office of INZ in September and October, a 63 percent increase compared to the same period a year earlier.
INZ has been concerned for more than a year that large numbers of Indian students may be arriving in New Zealand more interested in exploiting the work rights available under student visas than the often low-value, vocational skills courses offered by many PTEs.
The trend is raising concerns that student visas are being used as a de facto way to migrate to New Zealand permanently.
Chinese and Indian students have been driving strong growth in international student arrivals, but while Chinese students are predominantly heading to universities and polytechnics, Indian students are overwhelmingly enrolling in sub-degree independent training provider and PTE courses.
Of the 7,922 additional student visas issued in the first nine months of this year, 3,426 were for Indian students, an increase of 25 percent on last year, according to a report on the ICEF international education news website.
Chinese enrolments tend to be distributed across all sectors but skew towards the universities and Institutes of Technology and Polytechnics (ITPs). Indian students, in contrast, are more sharply concentrated in ITP and PTE programmes.
Analysis by the Ministry of Business, Innovation and Employment has found that 51 percent and 62 percent of PTE and ITP international students respectively have been staying in New Zealand after completing their study. The trend is raising concerns that student visas are being used as a de facto way to migrate to New Zealand permanently, with Indian students far and away the most likely to remain in New Zealand compared to other sources of foreign students since 2009.
The proportions of international students staying on in New Zealand are highly concentrated in areas of management and commerce, food, hospitality and personal services, IT and health.