I would suggest something like "SWE Outreach Evening",
because it sounds more casual than an "Education Meeting".
Under the title can be a short description explaining more in
detail what the meeting will be about.
This will be in the people's free time after work, so we should
appreciate that. The atmosphere should be such that the people
feel comfortable. They should get something to drink when they
arrive and there should be food afterwards to make them stay
and talk after what they have seen. Giving them T-Shirts would
be a great idea. I can donate the lighted pens for everyone if you
are fine with that.
Last - we might need to do something about parking permits for
the guests.
Please take these just as friendly suggestions and decide whatever
you like, this is definitely your show.
Pavel