If you are not going to have to income to act as the primary sponsor of your husband's petition, you will need to have a joint sponsor whose income is sufficient to sign the affidavit of support on your husband's behalf.  Without that, your husband's visa application will not be approved.  Also, please note that if you are going to be going to school overseas, you will need to make sure you prove to the USCIS and the US Consulate where your husband will be processing his visa that you are still domiciled in the United States and intend to reside in the US fulltime; otherwise, his visa application may be denied.