You have to look at the sites I've found - they would be amazing to use in your classrooms!
Read Write Think: One of my favorite sites I have used in my classroom is ReadWriteThink. There are lesson plans, interactive activities, printables, and more. Activities are arranged by grade level (P-12), themes and/or learning objectives. There are many activities the students can do right on the site. One of my Grade 7 students' favorite is the Comic Creator. The possibilities are endless with this site and the best thing: it's free!
Starfall: This site is great for readers from pre-reading right up to about a grade 3/4 level. It would be great to use for ESL learners as well. There are phonics activities, interactive books, read- alouds, songs, and a lot more! Preschool, elementary and program support teachers would love this site. Check it out at http://www.starfall.com/
Tumblereaders: This is an awesome site for students in upper elementary right through to high school! Students can have popular books read to them. There is great voice and selection of books at all levels which really impressed me as I work with Middle School students and it's difficult to find high interest books at that level! There are quizzes and lesson plans too! Students can also submit online book reviews which is great. The pricing may cause some difficulty at $499.00 per year. But that provides unlimited access at school. I think it is certainly worth it! Sign up for a free 30 day trial and check it out at: Tumblereadables .
Raz-kids: This site has interactive books, activities and quizzes. Teachers can create a roster and assign readings, activities, etc to individuals, groups or whole classes. Students can access this at home or school. It is fantastic for elementary students up to about Grade 5! The fee is $79.95 per class which is quite reasonable. The only problem I can see is that the students will need to be able to read the directions independently, but once they are used to the site, that shouldn't be a problem. There are some free books that can be used without a subscription. A free 7 day trial is available. Take a look at: Raz-kids sample
This is udltechtoolkit. It has numerous links to free websites - everything from reading to math to technology! You have to take a look for yourself because there are too many to mention! One of my favorites is Literactive as it has interactive books and games for children from preschool age and up. A great resource to use!