Coldwell Banker Residential Brokerage can help you find Mart High School, Mount Calm, TX homes for sale. Refine your Mart High School real estate search results by price, property type, bedrooms, baths and other features. Need more information? View Coldwell Banker Residential Brokerage Mount Calm real estate agents or offices and let us help you find the perfect property. We also have area guides that show more information about properties in Mount Calm, TX.