Editor's note: Marketing manager at the school Amrik Singh Sangha seems to have a dodgy past, and his wife Manjit Kaur owns 29 percent of the school's holding company. More than 1300 work visas were issued to foreign students at a time when New Zealand government agencies were aware of problems at the private school they attended, new figures show. A later investigation found the now-defunct school, the International Academy of New Zealand (IANZ), was passing students it should have failed. The figures, released to the Labour Party under the Official Information Act, show 857 work visas were issued last year to IANZ's students, and 464 this year. Labour's tertiary education spokesperson David Cunliffe said that was despite government agencies knowing about the rort. The first complaint against…