Is Microsoft Office compatible with Linux?

I am trying to get my mom to let me get Ubuntu with OpenOffice and delete windows XP from the family computer. She is worried that if I had to do a project at school (with Word, PowerPoint, or Excel) that I won’t be able to work on it at home. Am I able to put my stuff on a thumb drive and bring it home to work on? Will it work fine?

to take the form of her brother or save her mom’s life? I know the faun explains that a mandrake was a plant who always wished to be human so which human was it supposed to save or be? or am i just lost.

I have Vista 64 bit. If I were to get my mom a Linux OS Laptop, what would be the differences?