Although I am a Second Grade Teacher, I am having difficulty finding a program that can improve ELL students reading skills especially on the Direct Reading Inventory. Many of my ELL are performing BGL as well in reading and writing instruction including word work.
Oftentimes I find that word games promote student motivation, engagement, and achievement in literacy development.
There are a ton of online crossword puzzles and Words with Friends games. Also, Crossword Solver is a helpful tool with several word game resources (for Crosswords, Anagrams, Scrabble and Words With Friends) and word lists to accelerate literacy learning and vocabulary development.
Plus, the site also inspires community collaboration and is easy to navigate. Hope you find this helpful :)