Including critical feedback about a course on exam paper There was a subject in our university, regarding Web Designing.  Under that, we were given a group assignment to build a website using HTML, CSS and PHP(we were allowed to use additional technologies as well if we wanted). 

However,most of us felt like that we were not given enough practical guidance, because that was the first group project we were given with technical aspects in the university and though the lecturers tried to deliver their best the workload was too heavy even they failed to teach anything beyond the ones given in learning materials(textbooks).  There were sessions to discuss the issues with the teaching staff, but the time windows allocated were not enough as there were too many groups.  Under those circumstances, most of the groups were frustrated and it even affected the assignments in other subjects as well.  

Eventually, the websites we built were evaluated in a VIVA and our website was unfinished at the deadline. (the marks given were never disclosed to the students).  

When we were given the written paper for the final exam, after answering the questions as much as I can, I wrote a note to the examiner at the end of my answer sheet, criticizing the subject content being too heavy and the lack of attention towards the groups' progress.  I got a good grade for that particular subject in the end, but have never received personal feedback regarding the note I wrote.

Now looking back at the incident, I feel like I should have tried harder for the assignment, but I am still unclear whether that piece of criticism was suitable or not as I believe someone should have made a point.  

The issue is we keep getting more subjects with heavy workloads and low content organization like that as the degree is being progressed and there is no proper objection from the students.  

My questions are,   


Was my action appropriate?   
How to tackle such situations if they arise in future?
A note in your exam will most likely be disregarded.  There are a number of channels for feedback, this will vary according to university.  Feedback forms at the end of the course is the most common but you can reach out to your faculty administration and they should be able to provide you a form.  

You can also try to approach your professor directly: be courteous and to the point.  Remember that they're probably overloaded and they're doing the best they can in the circumstances.

Having said all this.  I have to say that most university courses are meant to be introductory courses.  That is the purpose is to give you an overview of the basic theory and the possibilities in a given subject. No course will ever be complete, even if you take advanced courses.   

In practical courses such as the one you mention your best bet is practical experience: by yourself, through an internship, etc.  This is something you can do (by yourself) now that you have been given the overview at the course.