New Zealand is an English-speaking country, and English is used in daily life and tasks. All kinds of schools in New Zealand have the threshold of IELTS scores for Mr. Zheng's dropping out of school. Moreover, due to the different education systems, the educational background of Mr. China also determines the required school level. English thresholds for courses at all levels are:

English threshold for preparatory courses: IELTS 4.5;

College/undergraduate English threshold: IELTS 5.5-6.5;

Postgraduate English threshold: IELTS 6.5;

The good news is that there is no IELTS threshold for studying in New Zealand, and you can get a visa even without IELTS scores. Therefore, students who want to study in New Zealand can request to attend intensive English courses in New Zealand. Generally speaking, if you complete the corresponding intensive English courses, you can drop out of school directly without IELTS scores. For example, the threshold of the foundation course of Unitec Institute of Technology is IELTS 5.5, and you only need to attend 10-40 weeks of English courses to go straight to the foundation course (the length of time depends on your English exam results).