Google for tutorials on "toner transfer" methods.
You need a laser printer or good quality photo copier, your school will have one Im sure.
Read several tutorials they are all slightly different and you can piece together a method to suit your resources.
Each of the steps are documented repeatedly in different guides.
I use eagle to produce my design for the board.
I print it out on a samsung laser printer on to magazine paper. You will have to experiment with the paper.
The paper is the key part of a successful board with the toner transfer method.
I tape the transfer to the pcb. Single sided nice and easy, double sided take time to line it up.
Ive had very good results with double sided but it is fiddly and may take more than one attempt to line it up properly. But at this stage you can just clean of the toner and try again.
I use an old cheap laminater to heat and transfer onto the board, you can use a domestic iron, Laminater is easier for me and cost about £10.00. I pass the board and transfer through about 6 times turning it over.
I use ferric chloride solution to etch in a sealed tupperware box. You can seal it up and use it again
If any of the traces are a bit sketchy touch it up with an etch resist marker pen, or marker pen, sharpies are quite good.
Heres one I did earlier:http://scratchpad.thisandthose.org/scratchpad/article.php?story=20100715160140327
This was only about my 4th attempt at a board.
Double sided and fairly fine traces, just one small mistake on one pad on the wrong side of the board. So theres no reason why you shouldnt be able to do something similar with a little research and practice.
I could give you a list of resources but you would get the same results from googling "Toner transfer method".http://www.google.co.uk/#q=toner+transfer+method