Here are the Rocket Spelling word lists and level numbers that we think align well with fourth grade standards. For more background on this, check out this post.

Level 10.1 Compound words #1: something, sometimes, anything, everything, yourself, everyone, himself, herself, someone, anyone

Level 10.2 Compound words #2: keyboard, notebook, homework, wheelchair, baseball, afternoon, birthday, newspaper, grasshopper, skateboard

Level 10.3 Contractions with 'not': don't, didn't, can't, won't, wasn't, isn't, wouldn't, doesn't, shouldn't, aren't

Level 10.4 Contractions with 'am', 'is', 'are': they're, I'm, he's, she's, you're, we're, what's, who's, where's, there's

Level 10.5 Contractions with 'will', 'would', 'have', 'had': I'll, we'll, you'll, I'd, she'd, we've, you've, he'd, they've, it'll

Level 10.6 Mixed contractions: let's, couldn't, haven't, they'll, I've, he'll, she'll, that's, weren't, we'd

Level 10.7 High frequency list S: products, unit, figure, certain, distance, difficult, length, width, summer, winter

Level 10.8 High frequency list T: practice, information, captain, language, material, especially, natural, dictionary, control, explain

Level 11.1 Prefixes #1 -- re, un, pre: return, preview, undo, unlock, preschool, unhappy, rewind, unplug, preheat, restart

Level 11.2 Prefixes #2 -- in, im, il, ir: impossible, irregular, illegal, invisible, immature, imperfect, incapable, improper, illiterate, impatient

Level 11.3 Prefixes #3 -- dis, mis, non: disappear, disagree, nonsense, nonstop, nonfiction, dislike, discover, misspell, misbehave, mistake

Level 11.4 Prefixes #4 -- other mixed prefixes: antifreeze, decode, abnormal, hemisphere, midnight, outrun, semicircle, submarine, tricycle, underground

Level 11.5 Suffixes #1 -- ful, less: beautiful, careful, harmless, hopeless, thoughtful, colorful, fearless, homeless, worthless, thankful

Level 11.6 Suffixes #2 -- able, ible: disposable, comfortable, visible, acceptable, readable, lovable, responsible, incredible, terrible, horrible

Level 11.7 Suffixes #3 -- other mixed suffixes: argument, punishment, sadness, happiness, childish, creative, freedom, boredom, kindness, movement

Level 11.8 Commonly confused words: loose, lose, choose, chose, desert, dessert, breath, breathe, quiet, quite

Level 11.9 High frequency list U: mountains, column, themselves, building, contain, special, business, separate, government, machine

Level 11.10 High frequency list V: necessary, rhythm, temperature, straight, suppose, experiment, syllables, exercise, interesting, surprise

In addition to these 180 words, fourth graders would also benefit by reviewing previous levels. In our work with fourth graders on this site, we've found that they love going back to some easier levels and crushing them quickly in addition to working on these grade-level words.