Bright Hub Education has a list of activities that you can use with Poe's "The Tell Tale Heart." They are suitable for many grade levels. Here is the link: Language Arts Halloween Activities with "The Tell Tale Heart."
Mrs. Waters' English has a list of scary stories along with activities for middle school, but most are appropriate for high school and college, as well. Here is the link: 21 Scary Halloween Short Stories for Middle School.
The New York Times Learning Network has an extensive list of Halloween-themed ELA activities including opinion writing prompts and poetry. Here is the link: The Learning Network: Halloween
I have four reading packets in my store suitable for grades 5 - 8 with Fall and Halloween themes. Each contain close reading passages, with reading comprehension questions, vocabulary work and fun writing prompts. The reading level is grades six and seven. They are in the Lexile stretch band for fifth grade, and the basic level for eighth grade.
Happy Halloween!