There is an interesting and very common case:
Student A and Student B submitted a programming assignment. The former got a pass but the latter failed this assignment. Student B sought help from Student A. At first, Student A helped Student B by giving advice over the MSN messenger and then passed Student B his passed work for reference. However, Student B decided to use the programming code Student A sent him for his referred work and both of them got caught for academic misconduct. Student A was very upset and he asserted that "...I'm disappointed because of my stupidity, I prefer to stay honest and say what exactly happened rather than try to find a more stupid excuse for my actions. I can prove the originality of my work since I got a pass for the submission. I have also the history from MSN messenger giving him tips etc before sending that piece of source code..."
Nevertheless, this is called "collusion", and both students involved in the case would be regarded as colluding, which is also a type of plagiarism - although one student has already passed his work.
"Two people writing an essay (or program code) together is not allowed. When several students work together amongst themselves on work that is set as individual work, it is called "collusion". When collusion is suspected, ALL students thought to be involved will be regarded as colluding; if one student gave their completed (and original) work to the other student, both collude. The issue of which one 'did the work' and which one 'presented it as it it were their own (but it was not)' is irrelevant. Both are involved in academic misconduct. Their actions undermine fair assessment of all students" (Source from http://www.scholarshome.org.uk/4students/QA1.html)
In summary, it is neccesary for both the academics and students to udnerstand and make distinctions between collusion and collaboration!
Further information can be found from: