Idea for a startup

Recently I was driving in a minibus and on the radio I heard one interesting idea. that one Indian computer science teacher created a special service for parents for his school by means of which parents could send SMS to a special number in return for a quarterly assessment of academic performance. And I got excited about the idea why not do this in our region, but first I decided to ask the respected public Habr what pitfalls can I expect in my undertaking or this service has been around for a long time, or maybe someone already went to do it: ). Kanechno If you develop this idea, you can add a bunch of useful things here.