"learning to read at 3"

Learning to Read by 3, available in Spanish as an eBook at Amazon, or as paperback here.
The book is meant for teachers (preschool, early elementary and special education)

PEarson Education: Filadelfia SERIES

Pearson, the largest educational publishing company in the world, has published Elisa's learning textbooks for preschoolers.  Get to know them here (Spanish)

filadelfia word kits for elementary and secondary school

Continuing from our early learning program, these materials are intented for elementary and secondary school students. Each word kit is comprised of 200 visual vocabulary words (with definitions and examples) for individual use. The objectives of this program are:
1.    To increase our children's knowledge of sophisticated vocabulary
2.    To increase reading fluency and comprehension, through instant word recognition
3.    To improve ortograhpy through repeated visualization of words with high frequency of mistakes.

Words are divided in groups of 20, and each group should be mastered each month. The words are to be shown very quickly, once or twice a day. There are eight different kits, for grades 1st to 8th.