Why are there still so many students who can't make the grade with all the study tools they have today?

Why are there still so many kids flunking out of school or barely passing? With all the tools today’s student have to use there is little reason why any kid should be below a B+ average. If you have access to the Internet even part of the time you have leaps and bounds more resources than I had going through high school. Just about anything you want to know you can pull up on the computer. You don’t have to go to the library armed with No. 2 pencils and rushing to take notes because the reference book you need and you was lucky it wasn’t checked out already, can’t be taken from the library. You won’t get stuck because said reference book you discover you need at 1am when you are trying to rush out your paper but it is locked away in the school library miles from you. You don’t have to write everything out double spaced in triplicate and having to rewrite many pages because you missed inserting some key information. These days you just open up the word processing program, make you edits, and hit “print”. With what is available today I believe I would have been a solid ‘A’ student or no less than a B+ student, so why with so many tools there are still so many slackers and flunkies who can’t seem to make the grade?