Avalon Heights International School

Avalon Heights is a Navi Mumbai school in Vashi, founded in 1998 by Mrs Simi Sharma in a small bungalow and now over 1,200 students. Affiliated to ICSE/CISCE through Class 10, with Classes 11 and 12 added in 2017, plus an IB Diploma stream.

The school sits on a Navi Mumbai Municipal Corporation educational plot near the APMC market in Sector 19, drawing heavily from Vashi, Nerul, Sanpada and the wider Navi Mumbai belt. The campus is large by Mumbai standards, well-maintained, and the school has been ranked among the top 10 Navi Mumbai schools in Hindustan Times surveys. An IGCSE stream ran historically but was discontinued in 2013.

Parents praise experienced and caring teachers, the breadth of extracurriculars, and the size of the campus relative to South Mumbai options. The recurring grumbles are management responsiveness, slow handling of admin queries, and a pre-primary play area that some families find limited. Best fit for Navi Mumbai families wanting an ICSE foundation with an IB Diploma exit, and comfortable with a large, full-strength Indian-curriculum school rather than a small expat-style setup.

• The school sits in the upper bracket of Vashi-area private schools, with a average across 325 Justdial ratings and a place in the Hindustan Times Top 10 Navi Mumbai schools (2019).
• ICSE board outcomes and a structured academic programme are the strongest positive themes, with parents describing experienced teachers and a large, well-maintained campus.
• Critical reviews flag thin pre-primary play space, slow front-office response and uneven communication between school and parents.
• Several voices describe academic intensity in Grades 8 to 10 as significant, with a workload that feels heavy by ICSE standards.
• Some reviewers raise concerns about HR practices and contract handling on the staff side, which surfaces in MouthShut and similar review boards.