My son doing part-time job in school holiday now.In many countries it is common for teenagers to take part-time jobs while they are still in poly or high school.But in Singapore ,students are expected to spend all of their time on their studies and consider schoolwork their "job".
In my opinion, I believe that it is a good idea for students to work while studying.
While it is true that a student's most important goal must be to learn and to do well at his studies,it does not need to be the only goal.
In fact, a life which consists of only study is not balanced and may cause the student to miss out on other valuable learning experiences.
Furthermore,work helps a student to develop greate independence.
For all of these resons,I firmly believe that most students would benefit from taking a part-time job while they are in poly or high school.
In sum. living a balanced life is the best way to be successful.