Get Stem MN: http://www.getstem-mn.com/
Connecting education and business to advance STEM opportunities. The “ASK” and “OFFER” buttons allow you to see what immediate opportunities/needs are available. The “Categories” button has a drop down menu which includes: speaker, mentor, judge, PD and more. You can also narrow down your search by zip code and enter the type of work you want to do.
“We bring good people and good causes together.” Web site allows search in major US cities. MPLS and St Paul among them. Join their data base; do a search for a specific role, ie tutor/mentor.