Colegio Las Cumbres outlines the content plan for the Writing Skills course taught by Professor Catalina Perkins. The course covers three main topics over three trimesters: describing people and places in the first trimester using adjectives, adverbs, and narrative techniques; writing letters in the second trimester focusing on giving news, advice, and complaints both formally and informally; and writing short stories in the third trimester working on plot development, topic sentences, and paragraph structure.