LearnZillion.com – A cloud based curriculum
AdLit.org – All about adolescent literacy grades 4-12
K12 Reader.com – Reading, spelling, sight words, grammar, phonics, comprehension, writing & more.
OxfordOwl.co.uk – Reading & math website that helps children ages 3-11
PBS.org/Parents – Reading Activities
High School Level:
Poemhunter.com Poems & Audio
LoudLit.org majority of short stories with audio links and actual text.
Shmoop.com homework help free resources math & lit.