How I Use It
I use Code.org with students in grades three to five, and they love it at first try. Using characters from Angry Birds, and moving blocks to create a path to catch a "green evilness", a pig, students are hooked to coding. Students learn at their own pace. Even though the program lacks a writing component, I create activities where students write about their codes.
ELL's and students with special needs benefit from course one which is made up out of orientation blocks: north and south to move up and down in the screen, and east and west to respectively move right or west.
If you need an introductory course to start teach coding, I think that Code.org is an excellent tool. Students can learn basic concepts of computer programming such as algorithm, sequence, debugging, and loops. I also like the fact that Code.org freely provides lesson plans that you may adapt to you needs. At the moment, the program lacks more flexibility. I mean, some times I need my students to create their own codes but there is no room for it. In sum, if you want your students to learn to code as fast as they can, give Code.org a try. I believe you're going to like it, too.