When students have difficulty comprehending what they’re reading, not only could they have trouble in nearly every subject in school, but they miss out on the joy of exploring new worlds, traveling back in time, and solving mysteries alongside their peers. High-interest stories sometimes are motivating enough to read, yet some students continue to struggle when it comes to reading.

And the stats, unfortunately, show that reading scores could still use a boost. The National Assessment of Educational Progress (NAEP) compared 2013 national reading scores with scores from 2015. The NAEP found that there was not a significant change at the 4th-grade level, and the average national reading score was 2 points lower at the 8th-grade level. Clearly, we’ve got work to do and kudos to you for hunting down resources to assist your students!

Here are 11 free websites we think you’ll find useful for reading comprehension.