What are the best schools in Interaction Design in US?

I have approx. 4 years of experience, already did masters in “Design for Retail experience” working as UX designer, thinking of masters in Interaction design… Any suggestions?

Hello Mayank ,
I am working with 2 Universities who will facilitate a Doctorate in UX .
One in the UK and one in South Africa .

Get in touch with me on dereck@swapmobile.co.za , I will gladly assist