Does anyone know of a GOOD, FREE video editing program?

im in school for film editing, but i cannot afford a mac OR final cut/avid, but if i want to do some editing at home on my PC when i am not in class on the top of the line equipment, what is a good alternative? everything i try says “free” but it ends up wanting me to pay once im done editing and want to publish the movie. is there ANY stable, free video editing software?