Columba Catholic College consists of two campuses, known as St Mary's and Mt Carmel. The boarding program operates from the two campuses in order to provide single-sex facilities, the St Mary's campus caters for girls and the Mt Carmel Campus for boys. The Christian Brothers retain ownership of the Mt Carmal campus and continue to provide some Brothers to the staff. Each of the Boarding Campuses has its own Chapel, while the Primary Campus is situated in the grounds of the Parish Church. The school also operates "Marybank" a 40-hectare property with facilities for outdoor activities, situated on the banks of the Burdekin River. Sporting facilities of the college include several ovals, basketball, tennis and netball courts, two 25 m swimming pools, and the recently constructed Multi-Purpose Outdoor Education Centre.
In Queensland, the first year of high school is year 7. During this year students continue with Key Learning Areas subjects in addition to experiencing new subjects. These include Religious Education, English, Mathematics, Science, Art, Study of Society and the Environment, Home Economics, Wood Technology, Metal Technology, Music, Computer Technology, Graphics, Health & Physical Education, and Drama. In years 9 and 10 students receive some choice in the subjects they will study. There are also core subjects which all students must undertake for the complete school year. These are Religious Education, English, Mathematics, Science, Study of Society and the Environment, Health and Physical Education. Electives at this stage include Japanese, Agricultural Science, Home Economics, Computer Technology, Business Studies, Drama, Wood Technology, Junior Visual Art, Metal Technology, Music and Graphics. Students in years 11 and 12 are prepared for the path they wish to take after high school. Those deciding to leave open the option of direct entry to University or TAFE after Year 12 are required to choose a minimum of five "Authority Subjects". These subjects come under the headings of Authority, Authority Registered, Subject Area Specifications, or are purely TAFE Based. Additionally, each Year 11 and 12 student is required to study Religious Education, one English subject, and one Mathematics Subject. Columba Catholic College performs well in statewide examinations, with The Courier-Mail reporting that the college was one of Queensland's top-performing schools with 89 per cent of students on Overall Position scores 15 or above.