Curriculum at St. Thomas School Deotalao Vasai west is framed keeping in mind the needs of the students in the 21st century. The Scholastic and Non Scholastic areas are intertwined in such a manner that they help in holistic development of a student and also facilitate skill development.The curriculum is designed and developed to support the vision and mission of the school. Through individualized education, we foster academic excellence and cultivate self-confident, creative, reflective, and analytical thinkers. The curriculum is a unique blend of emerging trends in education with tried and tested methodologies and best practices put into use.

The academic year begins in April and ends in March. It comprises of three terms for the Primary and the Middle school, and three terms for the Secondary school. The school follows the CCE (continuous comprehensive assessment). The assessments are broadly classified as SA (summative assessment) and FA (Formative assessment). There are two FA's per term and the end of the term is concluded by a SA. As part of the curriculum reform, the school has student-centered and problem-based learning to stimulate active learning among students. Teachers act as mentors and guides in the process. ThE new learning method helps the students to think critically, and to learn to become self directed lifelong learners.

The School also offers a wide variety of programmes and activities outside the regular curriculum to help broaden students learning experience and to become active and critical participants in arts and cultural events, assisting them to appreciate cultural diversity and ethics.

Grade I and II	Grade III, IV and V	Grade VI
English	English language	English language
Hindi	English Literature	English Literature
Marathi (Oral)	Hindi	Hindi
Mathematics	Marathi	Marathi
EVS	Mathematics	Mathematics
Music	Science	Science
Dance	Social Science	History
Physical Education	Music	Geography
Computer	Physical Education	Music
Art and Craft	Dance	Physical Education
Library	Computer	Dance
G.K.	Art and craft	Computer
	Library	Art and craft
	GK	Library