VocabularySpellingCity's mission is to facilitate vocabulary development, phonics, and writing skills through a word study tool that allows for differentiated instruction while working with vocabulary and spelling word lists. The site has been particularly useful in engaging struggling students, facilitating English language vocabulary skills with ESL students, building a school-home link, and simplifying teachers' and parents' administrative work.

The most popular learning activities are word unscramble, wordsearch, hangman, crossword puzzle, alphabetical order practice, grammar, handwriting practice worksheets, and writing activities.