Holy Spirit School is a co-educational institution affiliated to Central Board of Secondary Education, Delhi (Affiliation No:930875). It is situated at west Poonkulam, with bushy green surroundings adjacent to Fathima Matha Church, Poonkulam. The school is managed by Holy Spirit Charitable Society (Reg No: P-471/88) in the Atmadhara Region, with its headquarters in Tiruvalla. The school provides the best ambience for the overall development of the students. The school has its reputation for shaping individuals who are receptive and acclaimed for their pioneering ideas. HSS has been humanizing many students for last many years. The school was opened in 1993 by Holy Spirit Sisters, with kindergarten and upgraded as Primary School in 2002 and later into Secondary School, affiliated to CBSE, Delhi in 2011-2012.
The HSS has been rendering excellent services to the society, and has become one among the leading schools in Trivandrum.