[kkowalczyk]

The way to validate it is to create it and see if it works.

Your problem is that the success depends on execution.

We do know that there is market for good educational software. Many successful apps already validated that.

If you write one more good educational software, chances are you'll be successful.

However, chances are that your software will not be good in which case no success for you.

Another problem is that you might be trying to bite more than you can chew. The idea of comprehensive software product is good but if you try to build that as your version 1.0, you'll likely fail. Start small and build on your successes.