This reminds me of a story from middle school...
I was in the 5th or 6th grade and the school's stage that connected the gym and the cafeteria was made into a "haunted house" kind of thing. When I went through it, someone (a boy who was in a grade or two higher than me) jumped out and I kicked him as a reaction,
then he fell over and held his shin. I felt really bad for it, was apologising and everything.
So, yes, that was the one thing there that really scared and startled me.
But other than that, I've never been to another haunted house or anything.