Last year I was able to go by one of the sites used as the school in Heathers, see here.
This time around, I got to the church used in many of the funeral scenes. This church has been used in many productions, including Buffy the Vampire Slayer.
"I love my dead gay son."
"It was the MTV video games..."
"Is this funeral lame or what?"
As an extra bonus, here is Glenn Shadix, who played the priest in the film...