"Advanced Spelling" by Oliver Optik is a study guide that helps improve writing and spelling of English words for students who already have some experience in learning the language. The book contains complex words and spelling rules that will help the reader deepen his knowledge and improve his writing skills. With this guide, readers will be able to improve their written language and enrich their vocabulary. "Spelling for higher classes" is an indispensable assistant for those who seek to improve their knowledge of the English language at a higher level.