Superior and Excellent Education Service with the Customer Always at the Forefront of our Minds. International Student Ambassadors (ISA) is a comprehensive education and homestay management company, striving to enable academic excellence, cultural awareness, and tolerance amongst students from diversified cultures and nations. Our customer service-based company prides itself on providing Excellent Service with our Customers Always at the forefront of our minds. Our services are inclusive of North American high schools, colleges, and universities for international students.