I am a really huge Kawaii fan too. So I always carry this bag to school. You do not have to carry a high end brand, as we move around in school a lot. Sometimes they can get dirty from pencils, art supplies and pens.
Get some cool earphones that are useful for listening to music while your working.
My pouch attached to this bag has my earphones in it. These Harajuku Lovers were on sale at Courts electronic store in Singapore. They are now on sale at your nearest electronic stores.
Its best not to overload your bags for school, always carry an extra tote bag, like this long lasting TOPSHOP tote below, I bought 4 years ago. Sometimes bags can break very easily or rip. It is also good to get items that can last long to be environmentally friendly and to save money.
This is also a cute quirky backpack for school. You can find these at Fullybooked. This will make you stand out without trying too hard and being someone who is always labeled. I would advise not to use high end leather bags, like Louis Vuitton, Chanel etc. for school due to the activities that are held, such as physical education and heavy stuff are always being carried. I would only suggest to use those leather goods for Travelling. This backpack here is also a trend of 2012-2013. They are being carried by most teenagers and children. I am also the type of person who loves the spikes and studs trend. Spikes can also be used to protect yourself. They were originally worn by punks, gangs and made for gothic street fashion. But be careful what kind of spikes you wear on board the plane.