Teaching Vocab/Reading Literacy

Recently I attended an RTI (Response To Intervention) Workshop. One of the key components that our team discovered was that the students in our district have literacy issues across the board. It's not just in English class, they have difficulty with reading and comprehension in most, if not all, core classes. I came across some suggestions/tips for teaching vocabulary on the Edutopia website. If anyone has some strategies for literacy, I would love to hear them. We are trying to compile some strategies to share with the staff.