The School started on 6th November 1976. It was inaugurated by Guru Chengannur (The Kathakali Acharya Chengannur Raman Pillai). The school had very humble beginnings in a rented building at Mundankavu, Chengannur, with only thirty students and three teachers. The school was boosting of more than three hundred students, ten teachers and classes up to the eighth standard, and we moved to the new ‘own’ campus at Peralassery, Mulakuzha in the year 1978 ; Obtained NOC for ICSE affiliation in the year 1979. Got affiliation with ICSE in the year 1981. Obtained NOC for CBSE in 1997. Got affiliation with CBSE in 1998.33 batches of X and 31 batches of XII successfully passed out so far.d out from the school.
The School follows CBSE Syllabus and is affiliated to Central Board of Secondary Education Delhi Affiliation number 930197 .
The St Gregorios Senior Secondary School is located at Mulakuzha, a quaint hamlet about one and half kilometers on the way to Pathanamthitta from ITI junction, Chengannur. The school stands on one of the lush plantation hills at Mulakuzha, away from the urban bustle. Chengannur lies midway between Ernakulam and Trivandrum.