During the golden era of the "Kotte Kingdom", there was a famous "Kovil" called "Isuru Kovila" existed there. In 1827, priests called as C.M.S. were settled there. Then in 1850, they built up the very place where the "Isuru kovila" was existed.

On the 14th of October 1870, two schools were started by the names of St.Mathehew,s boys' school and St.Mathehew's girls' school. Mr.D.F.D.Silva and Mrs.W.M.D.Sahara were the two principals of them respectively.

In 1962, all staff members were given appointments by the government. In 1920, classes were held into two sessions. But since1989, it was converted into the morning session basis