I have actually seen a huge decline in school interest in the last decade. While there is no one reason for this, I think a couple of big factors are:the entertainment-style learning students expect, the learned helplessness of many of this generation due to coddling from parents and teachers, and the lack of consequences for not doing work (both from the school and at home).
Students are so used to the face-paced video-game style of learning, that any kind of direct instruction is boring to them in the first 30 seconds. To get students motivated these days, I find I have to make every lesson "fun." This involves money to buy props/accesories, and a lot of energy and isn't always possible.
Next, parents (and many teachers due to district-mandated no fail policies) have run so much interference for their kids that they haven't learned to do anything themselves. If they turn in something late, they complain to mom and dad who complain to the district who complains to the teacher and the student gets an extension...so there is no need to be diligent and meet deadlines.
Sorry to sound to negative, and I am absolutely not saying this applies to all students...but it is a definate trend that is scary to say the least.