If the change is not designed to educate the student, then the point isn’t education.

As a general rule when changing complex systems, you sacrifice what you aren’t trying to optimize. If you make a random change to a car without consideration for gas mileage it’s very likely to reduce gas mileage.

Schools are not merely in the business of maximizing education, they have their own prestige to uphold, and they would like to give degrees with their name on it to students who have actually upheld their end of the contract.

(The other side of that contract is, kids are not merely attending schools to learn, but to earn a degree that carries some degree of prestige)