I searched this forum for my answer but I was not able to find any. My question is as follows. My spouse (on H4 visa, EAD approved) and I currently have I-140 approved (awaiting current status for further filings) and are going for 3 more years of H1B (and H4 for my spouse) renewal next month (due June, 2017). My spouse wishes to pursue further studies back home in India and wants to enroll in post graduate course for 3 years duration. Suppose that our H1B is renewed for another 3 years, can she pursue 3 years course back home in India? Will it affect our green card process. I don't expect our current status until 5-7 years as USCIS is processing 2008-2009 at present.

Thanking you for your help