| 1895 | Laurencekirk Public School becomes a centre for Secondary Education. (Free, compulsory education for all local 5-13 year olds. Secondary pupils still fee-paying). |
| 1912 | New Science, Domestic Science and Woodwork rooms added to main (north) site. |
| 1918 | Education Act Free secondary education now available. |
| 1920 | Laurencekirk Public School based on three sites (the present north site, the former Episcopal School, and the Infant School). |
| 1923 | Laurencekirk Public School officially recognised as a Higher Grade School. |
| 1934 | New buildings opened on the main street. (Five classrooms, two staffrooms, clinic). |
| 1937 | Four more new classrooms opened, Gymnasium added. |
| 1939 | School renamed Laurencekirk Junior Secondary school. (Pupils who passed a qualifying exam at age 12 would usually go to a Senior Secondary school). |
| 1948 | House system introduced (Conveth, Johnston, Thornton). |
| 1954 | New Science and Homecraft rooms added. |
| 1966 | Further extension to the school, new wing added, and dining hall. |
| 1972 | Comprehensive Education system introduced. |
| 1974 | School granted Senior Secondary Level status. |
| 1977 | (June) School officially recognised as providing education through to sixth year. |
| 1977 | (November) School renamed Mearns Academy Rector to be official title of head teacher of now separate secondary department. |
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