Older siblings and cousins or grandparents might be up for calling you out of school, likewise friendly neighbors or a sibling of one of your friends. Make sure they keep the conversation brief and non-specific.

Stay quiet during the day, with a concerned look on your face. Cradle your head in your hands and sigh deeply. Squint your eyes. Don’t rush it. It’s best if someone else brings up the subject of you not feeling good. If you lay it on thick enough, keeping your head down and looking ill, your teacher may say, “Is everything okay?” at which point you’ll be able to play it off, and say, “I don’t know, I just don’t feel right. I think I’m okay. " It’s better to downplay it.

For another option, get up in a rush and ask to go to the bathroom. Leave hurriedly, as if something were very wrong, then take your time and head to the restroom slowly. Kill some time in the bathroom, wash your hands, and head back to the classroom after a long enough period of time to vomit has passed. Tell your teacher quietly you just threw up and you’d like to visit the nurse.

If you want to be sent home no questions asked, say you vomited. No one’s going to make a kid stick around school who just puked in the bathroom, risking getting everyone else sick. The nurse will call your parents and ask if you can be picked up, or let you leave if you drive to school. If you want to kill the rest of the hour go with a headache. If you just can’t stand the thought of another boring lecture on nothing, why not nap it off in the nurse’s office? When the period’s over, the nurse will probably check on you, at which point you can tell them you feel better and you want to go back to class, or you can say you want to be sent home. If you want to cut the rest of the day without calling home then just leave instead of heading to the nurse’s office. Sign out and head wherever you wish.

Look antsy and say you have “bathroom problems. " If you’re female, say you are having a bad period or “female problems. " Look upset and ask if you can talk to the school counselor. Deliberately leave a bag or other item in another room. Say you’ve lost it or left it in your gym locker, and claim there’s something important inside (keys, wallet, etc. — but don’t actually abandon these).

If you are reasonably tall and go to a large school, you can try dressing in smart clothes and pretending to be an adult. This may save you from a staff member’s passing glance, but don’t expect it to save you if someone stops you.

If your school has very tight security, or if there’s nowhere to hang out near your school, you could spend the whole class in a bathroom stall. You’d better have the best game ever on your phone for this to be worth it.

Walk directly away from the school when you leave the school grounds. Don’t pass by any windows or chain link fences where a teacher can see you on the other side.

Use your knowledge of school policy to your advantage. If the school marks you absent after five minutes, claim you were just late coming from the bathroom or from the previous class. If one parent is much less strict than the other, bring up the subject when only the lenient parent is around.