As employment is already well covered, I would comment that "Contract law" is too fundamental/broad to really be it's own practice area. Instead, most practice areas will rely heavily on a firm grasp of contracts.
You should also be aware that the boundaries between areas of law are not well defined and is often just a convenient way to digest the information. Is a case of sexual harassment at work employment law? Human Rights? Contracts? It probably implicates all of these areas and more.
Sorry to be off topic but this is really interesting. Where did you find that link? Is the original page linking to it still up?
I wouldn't expect them to have and even publish data from other schools.