In India, the situation is different. We have a different mindset and people look down upon students earning while studying. There are a few businesses that hire students as part-time workers, but they are far and in between. Not just that the ones that I know of are all MNCs, such as Mc Donald's, KFC, Domino's etc.
A few students take the initiative and find decent employment. I had a house help, whose daughter joined a BPO after class 12, but continued with her studies. She went on to do an MBA and is now employed as an HR in a multi-national.
"A love affair with knowledge will never end in heartbreak" - Michael Garrett Marino
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Now a days many students are distributing news papers house to house in early morning. They may spend a little more than 1 hour and up to 200 papers they will distribute. That is giving about Rs.3000/- to Rs.4000/- a month.
It is a good practice to earn while you learn. You can also learn while earning in a later stage of the life