St John's Matriculation Higher Secondary School is a school in Alwarthirunagar which had its beginnings in the early 1980s. The school was founded by D John Ponnudurai. This school is part of IYAP consortium. The school follows Matriculation Syllabus for students between Grade 1 to Grade 10 and Tamil Nadu State Board for grades Eleven and Twelve. It has branches in Porur, Triplicane and a sister school in the name of the Good Shepherd in Alwarthirunagar. The medium of education is English with Tamil, Hindi and French as second languages.