PHIUS (passive house institute US) and Ecological Construction Laboratory (e-co lab) are hosting the 4th Annual North American Passive House Conference on campus this year. I will likely be attending as my employer is footing the bill. I was impressed with the conference when I attended several years ago.
Registration price is steep, but on the website they have they have a student rate if you call and ask about it. I know the executive director, they are quite amenable and may be willing to offer discounts if you only want to attend a session or two. Contact Keihly Moore if you are interested at 217-344-1249 or email@example.com