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International Schools Hyderabad, International Schools, Hyderabad - Manthan International Schools Hyderabad - CBSE Schools, High Schools, IGCSE, CBSE, High, Schools, Primary, Pre Primary, School. Call: 040 4220 6060. Manthan International Schools Hyderabad - Bringing the best international education in Hyderabad. CBSE, IGCSE Syllabus - Excellent teaching methodologies and state-of-the-art infrastructure offering you the truely international education that your kids deserve.