English as a Second Language classes are offered year-round at Green Valley School. Classes are free and structured so students can register or exit at any time during the year. New students are assessed to determine their skill level as basic, intermediate or advanced. At the basic level students work on alphabet recognition, building vocabulary, pronunciation, speaking and some writing skills; while the intermediate level work focuses on grammar skills and learning vocabulary in writing, reading and conversation. The advanced level works to fine-tune grammar, reading, using more involved conversation and writing short essays.