Dehradun has been a schooling town for well over a century, and the phrase “top schools in Dehradun” gets used to mean several different things. For one family it means a strong academic record. For another it means a residential campus where a child living away from home is properly looked after. For a third it means a manageable commute, an honest fee schedule and teachers who answer the phone. There is no single ranking that settles this, and any list claiming otherwise is usually selling something.
What does exist is a set of things you can check. Affiliation numbers are published. Classroom counts, laboratory counts and teacher qualifications are filed with the board. Fee schedules can be asked for in writing. Safety arrangements can be seen on a campus visit. This page is a working guide to that comparison, and Doon Global School appears at the end with its own figures set out plainly, so you can hold them against whatever else is on your shortlist.