I am currently a PR. Right now I am waiting for admittance to enroll in PhD programme in NTU. If I take that, it means I will only earn limited monthly stipend about $2k-2.5k, which is lower than entry level engineer salary here. Since I have family in my country (a wife and a little kid -and there will be another one delivered end of this year, God Willing

I am not really concerned if after I graduated I can't work here anymore. I will just go home to my country. Will they give me student pass if I renounce PR upon me admitted to the university? Any risk?
Thanks for your response.