There are a handful of good CBSE schools in the city, though CISCE schools offering the ICSE-ISC are far more popular here. A large number of students in CBSE students aspire to study in Delhi or Mumbai University after Class 12, and given the sky-rocketing cut-off marks required for admission to Delhi University, there is a lot of pressure to score well in the CBSE examintions. The CBSE syllabus is well aligned with that of competitive examinations such as the Joint Entrance Exam and the Medical entrance examinations. These examinations, specially the IIT-JEE, are quite popular among CBSE students. There is also an increaisng trend of heading for undergraduate studies abroad, especially to the UK, US or Singapore.

CBSE vs ICSE/ISC vs IGCSE/IB: A quick summary of differences between the academic pedagogy in these boards

The CBSE curriculum is considered to be more compact and manageable than that of ICSE till Class 10.

There are five compulsory subjects in CBSE, at the Class 10 level: English, Second Language, Science, Social Studies and Mathematics. 

The ICSE curriculum is more comprehensive till Class 10, with significantly higher standards in English. Shakespeare is introduced in Class 9, in many ICSE schools. There is also quite a bit of focus on practical and project work. Apart from that, there is also a sixth subject for which students may opt from a large variety of courses such as Computer Science, Economics, Art, Commercial Applications, Home Science and so on. Students have to appear for separate examinations in History/Geography and Physics/Chemistry/Biology, unlike CBSE where these are clubbed in single papers for Social Studies and Science. 

In Class 11 and 12 the ICSE-ISC syllabus is quite similar to that of CBSE. The Science syllabus in particular, is completely aligned with NCERT. 

IGCSE and IB are international boards and they have less emphasis on rote learning. IB in particular emphasizes a lot on developing the research abilities of students. 

There is a lot of focus on practical and project work. These boards are better suited for candidates aspiring to study abroad after high school. They might not be suitable for those wishing to appear for competitive examinations in India. In the past, IB students have also faced difficulty in the admission process to universities in India. This is one aspect which parents and students might need to look into. 

A large number of students from top ISC and CBSE schools have successfully managed to enter top universities abroad, after high school. Some students appear for "AP" tests to help make their application stand out. 

DISE data for infrastructure details of various Mumbai schools is listed here and here. 

Top CBSE Schools in MUMBAI - (MAHARASHTRA) Ranked by their Average Percentage marks in CBSE-2018 Class 12 Examinations

School Name	Average %	Streams	Performance and Subjects
R N PODAR HIGH SCHOOL SANTACRUZ MUMBAI MR	84.783	Science, Commerce, Arts	Out of 389 candidates, 146 scored in the 90+ band. The subjects offered by the school were: English Electivec, Mathematics, Physics, Chemistry, Economics, Biology, Computer Science, Engg Graphics, Psychology, Mass Media Studies, Political Science, Sociology, Entrepreneurship, Business Studies, Accountanc. The topper scored 98%.
NAVY CHILDREN SCHOOL NAVY NGR COLABA MUMBAI MR	82.649	Science, Commerce, Arts	Out of 127 candidates, 30 scored in the 90+ band. The subjects offered by the school were: English Core, Physics, Chemistry, Mathematics, Computer Science, Physical Education, Economics, Biology, Psychology, Mass Media Studies, Accountancy, Business Studies, History, Political Science
ATOMIC ENERGY CEN SCH4 ANUSHAKTINAGAR MUMBAI MR	78.605	Science	Out of 87 candidates, 14 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Biology
M K V V INTVIDYALAYA BORIVLI WEST MUMBAI MR	78.101	Science	Out of 131 candidates, 25 scored in the 90+ band. The subjects offered by the school were: English Electivec, Physics, Chemistry, Biology, Physical Education, Mathematics, Engg Graphics
RYAN INTERNATIONAL SCH KANDIVALI E MUMBAI MR	77.535	Science, Commerce	Out of 146 candidates, 31 scored in the 90+ band. The subjects offered by the school were: English Core, Physics, Chemistry, Mathematics, Physical Education, Business Studies, Accountancy, Economics, Biology, Psychology
ARMY SCHOOL COLABA MUMBAI MAHARASHTRA	76.474	Science, Commerce	Out of 66 candidates, 8 scored in the 90+ band. The subjects offered by the school were: English Core, Physics, Chemistry, Mathematics, Physical Education, Biology, Informatics Practices, Economics, Business Studies, Accountancy
RAJHANS VIDYALAYA ANDHERI WEST MUMBAI MR	76.103	Science, Commerce	Out of 194 candidates, 30 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Engg Graphics, Web T, Biology, Psychology, Computer Science, Economics, Accountancy, Business Studies
KENDRIYA VIDYALAYA NO 2 R S COLABA MUMBAI MR	75.893	Science, Commerce	Out of 114 candidates, 10 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Physical Education, Hindi Core, Biology, Biotechnology, Economics, Business Studies, Accountancy, Informatics Practices
KENDRIYA VIDYALAYA NO 1 COLABA MUMBAI MR	74.698	Science, Commerce, Arts	Out of 57 candidates, 2 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Biology, Hindi Core, Economics, Business Studies, Accountancy, Informatics Practices, History, Geography, Political Science
GOPI BIRLA MEM SCHOOL WALKESHWAR ROAD MUMBAI MR	74.462	Science, Commerce, Arts	Out of 45 candidates, 7 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Biology, Physical Education, Psychology, Economics, Accountancy, Entrepreneurship, Business Studies, Web T, History
KENDRIYA VIDYALAYA CGS COLONY KOLIWADA MUMBAI MR	73.509	Science, Commerce	Out of 106 candidates, 7 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Hindi Core, Biology, Economics, Accountancy, Business Studies
KENDRIYA VIDYALAYA I N S HAMLA MALAD MUMBAI MR	73.487	Science, Commerce, Arts	Out of 76 candidates, 5 scored in the 90+ band. The subjects offered by the school were: English Core, Hindi Core, Mathematics, Physics, Chemistry, Computer Science, Biology, Biotechnology, Informatics Practices, Economics, Accountancy, Business Studies, History, Geography, Political Science
KENDRIYA VIDYALAYA MANKHURD CAMP MUMBAI MR	72.165	Science, Commerce	Out of 77 candidates, 4 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Hindi Core, Biology, Informatics Practices, Economics, Business Studies, Accountancy
BILLABONG HIGH INTERNATIONAL SCHOOL MUMBAI MR	71.712	Science, Commerce	Out of 25 candidates, 1 scored in the 90+ band. The subjects offered by the school were: English Core, Physics, Chemistry, Biology, Mathematics, Computer Science, Physical Education, Accountancy, Economics, Business Studies
KENDRIYA VIDYALAYA N C H C BHANDUP MUMBAI MR	69.539	Science, Commerce, Arts	Out of 108 candidates, 5 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Computer Science, Biology, Hindi Core, Economics, Business Studies, Accountancy, History, Geography
KENDRIYA VIDYALAYA NO 3 INS COLOBA MUMBAI MR	67.983	Science, Commerce	Out of 35 candidates, 2 scored in the 90+ band. The subjects offered by the school were: English Core, Mathematics, Physics, Chemistry, Biology, Hindi Core, Computer Science, Informatics Practices, Economics, Business Studies, Accountancy

A list of top CBSE schools across India, ranked by Class 12 performance (2018)

Performance of CBSE Schools in Mumbai and Navi Mumbai in Class 12 Board Exams of 2015

School Code	School Name	Number of Candidates	Average Aggregate
SCHOOL CODE: : 06850	DELHI PUBLIC SCHOOL NAVI MUMBAI MAHARASHTRA	212	89.273
SCHOOL CODE: : 06829	R N PODAR HIGH SCHOOL SANTACRUZ MUMBAI MR	270	88.414
SCHOOL CODE: : 06855	APEEJAY SCHOOL KHARGHAR NAVI MUMBAI MR	81	85.783
SCHOOL CODE: : 06714	ATOMIC ENERGY CEN SCH-4 ANUSHAKTINAGAR MUMBAI MR	90	85.238
SCHOOL CODE: : 06773	APEEJAY SCHOOL NERUL NAVI MUMBAI MAHARASHTRA	145	84.197
SCHOOL CODE: : 06799	RAJHANS VIDYALAYA ANDHERI WEST MUMBAI MR	214	83.108
SCHOOL CODE: : 06798	NAVY CHILDREN SCHOOL NAVY NGR COLABA MUMBAI MR	109	83.007
SCHOOL CODE: : 06842	DAV PUBLIC SCHOOL NEW PANVEL NAVI MUMBAI MR	186	82.369
SCHOOL CODE: : 06713	KENDRIYA VIDYALAYA I I T POWAI MUMBAI MR	140	81.433
SCHOOL CODE: : 06708	ARMY SCHOOL COLABA MUMBAI MAHARASHTRA	57	80.004
SCHOOL CODE: : 06843	D A V PUBLIC SCHOOL AIROLI NAVI MUMBAI MR	305	78.794
SCHOOL CODE: : 06844	DAV PUBLIC SCHOOL NERUL NAVI MUMBAI MR	205	78.703
SCHOOL CODE: : 06841	M K V V INT.VIDYALAYA BORIVLI WEST MUMBAI MR	127	77.107
SCHOOL CODE: : 06761	KENDRIYA VIDYALAYA N C H C BHANDUP MUMBAI MR	99	76.509
SCHOOL CODE: : 06790	KENDRIYA VIDYALAYA MANKHURD CAMP MUMBAI MR	84	75.798
SCHOOL CODE: : 06710	GOPI BIRLA MEM SCHOOL WALKESHWAR ROAD MUMBAI MR	23	75.548
SCHOOL CODE: : 06712	KENDRIYA VIDYALAYA I N S HAMLA MALAD MUMBAI MR	98	74.604
SCHOOL CODE: : 06706	KENDRIYA VIDYALAYA NO 2 R S COLABA MUMBAI MR	129	74.532
SCHOOL CODE: : 06711	KENDRIYA VIDYALAYA CGS COLONY KOLIWADA MUMBAI MR	142	74.338
SCHOOL CODE: : 06707	KENDRIYA VIDYALAYA NO 1 COLABA MUMBAI MR	121	66.825
SCHOOL CODE: : 06709	KENDRIYA VIDYALAYA NO 3 INS COLOBA MUMBAI MR	71	65.242

Schools with an average marks exceeding 80% in the board exams are among the very best in the country.