Definately don’t bring shampoo and conditioner and soap for the year. I brought one of each at the begining and used it until i got some isrealy stuff. then i used my american stuff before yomim tovim and whenever i was in the mood. i even had leftover by the end!
I would bring pens and pencils becuase they seem to cost a fortune there-like four shekel a pen – that like a dollar! i would just bring from home but everything else for school you can really buy there.
make sure to find out about if you school has a tiyul dress code so you can try to bring the right clothing. of course you can always wear your uniform but its nice to be able to wear something else if the school lets.
other people said this already but bring deoterant. also sunscreen and batteries i was told were really expensive there. i don’t know why. i brought enough for the whole year so i really never got to find out if it really was more expensive or not.
i wore the same outfits or two every week….also, leave some stuff at home just in case your suitcase get lost on the way back-i know someone it happened to but she had no clothing for two weeks cuz she brought it all to Isreal with her. leave stuff at home….
also, find out if you know people coming over the year for sukkos, chanuka….then you can ask your parents to send stuff with them-like a little bit at a time so its not too muhc for one person then you can get the stuff you have to leave behind….
have a safe flight and a great year!!!