It does not have merit as it cannot be measured and proven. We can trot out all the examples in the world like the divergent history of the Red fox and the Kit fox and the path they took from a common ancestor. We can provide proof throughout the centures of their gradual evolution and the answer we will always get back is that the Intelligent Design guided them towards that.
This kind of stuff will only succeed in confusing kids. Teachers jobs are to teach the truth, not give equal time to everything. We don't give equal time to the flat earthers, But we are practically giving equal time to Noah's flood carving the Grand Canyon in 40 days (Ain't that a kick in the scientific nuts?)
link What's next?
If it is not supported by any rational evidence and has not gone through the process of a real theory, it shouldn't be allowed to stand next to something that has actually withstood the test of time and scrutiny.
Like I said, if we have rot our kids brains with ID in public schools, then rot them throughly by teaching Alien forcing the cultivation of earth and using pyramids as space beacons. Less than doing that is an obvious ruse to force religion in our schools.