First, tuition assistance refers to money paid for earning college credit at an accredited public or private university. I don't know if carriers have people capable of teaching courses in this capacity...if they do, then I am happy that you and those who served with you were able to take advantage of it, and I hope that it continues to be available for you. But realize that two professors provides a very narrow breadth of classes to take, and servicemembers who would want to fully utilize the program would still need to take classes online while underway, which is extremely difficult and requires the chain of command to make a lot of exceptions for the member's course schedule. Not to mention you'd have to do it on Navy comms networks.
But, you're in the Navy. They are cutting tuition assistance for the Army and USMC (and one Air National Guard unit).
I cannot find the numbers of how many active duty Soldiers and Marines use tuition assistance on the web. Everything that pops up is college advertisements for it and news stories that give no data other than personal accounts from college professors. But those cutting it claim that it's a rarely used but high cost program, which is why it's on the chopping block.