Students would be able to learn computer-related skills which would help them

[Nonverbis]

This is Upstream Proficiency by Virginia Evans and Jenny Dooley.

Could you help me understand why there is no comma here? This is extra information, I would say it should be separated with a comma.

 

[emsr2d2]

It's an error. It should either have a comma before "which" or "which" should be changed to "that". The latter change would also change the meaning.

 

[jutfrank]

I think the comma isn't included because the writer intended to use a defining relative clause. In other words, it isn't extra information—it's a reference to only those computer related skills that would help students in the future careers.

It's quite normal to use which instead of that in this kind of defining clause, in British English, at least.

 

[Tarheel]

I think the phrase "computer-related skills which will help them with their future careers" is a mistake. Why? Without the comma after "skills", it suggests that there are some computer-related skills that would not help them with their future careers. (Which ones are those?)