For the last one hundred and fifty years, the school has imparted the finest education to its students. It follows the Indian Certificate of Secondary Education (ICSE) up to the tenth grade and the Indian School Certificate (ISC) for the eleventh and twelfth grades. The standards set by the institution are high and marks have to be earned through sustained hard work. The needs of students with learning difficulties are catered to by the Learning Resource Centre.The student body of 1,960 boys and girls is divided into four Houses named after the founding fathers there is a fierce sense of School first, house next, self last as expressed through our school song. The Cathedral & John Connon School is affiliated with the Council for the Indian School Certificate Examinations(CISCE), and its students appear for the Council's ISC (Grade 12) and ICSE (Grade 10) examinations. English is the medium of instruction. Hindi is taught as a second language and Marathi or Sanskrit are taught as third languages. Examinions are held at the end of every school term. The school's students have performed well at the ICSE and ISC examinations and the school has maintained a 100% pass-rate. College Board's Advanced Placement program has been conducted in the school since June, 2004. Talented students, who would otherwise be uninterested in a mainstream classroom, are offered the chance to pursue accelerated learning (college-level) courses in subjects including English, Calculus (AB and BC), Physics, Biology, Computers, World History, Chemistry and Economics. The school is the only AP Examination Center in Western India.