I live in England, and I'm in year 9. I dunno what grade that is.
I have to wear a uniform with a skirt and a blouse, so no pockets. Everyone round here knows what tamas are, so I can't leave it out. I tend to keep it in the small pocket in the back of my bag, and when the teacher looks away at the start of the lesson, I slip it into my pencil case. That way if a teacher comes over I can hide it easily.
For gym, I make sure it's not hungry or anything (cos I hate pausing it). We have to take our valuables up to the gym with us and leave them with our shoes at the side, otherwise people come into the changing room and steal our stuff! We take our mobiles, mp3 players, purses, and our make-up if we have any with us and we stick it all in a huge make-up/cosmetics bag so it doesn't get lost, so it's easy to hide it.
Some people notice my tama and call me a baby for it, but I just live up to that if they make fun of me. If they insult me I pretend I don't understand and talk in goos and gurgles!
Heres my tips I've learnt from this:
• keep the sound off
• remove any charms or the chain it comes on, to reduce noise
• don't play games during lessons
• play with it during a movie. no one will notice
• always have a notebook and pen handy so tht you can pretend to make notes if a teacher comes over
• never leave it on your desk
• keep it in your pencil case/purse/pocket
• if you have to wear a dress/skirt to school, leave it on your lap, and hide it in the pleats of the skirt
• don't get it out during a test
• check on it during registration
• play with it during break or lunch time