I found a list of online translators (scroll down, the list is on the left in a baby blue field), but I can't vouch for their worth. If you have documents that you need translated and are loathe to use one of these, I would suggest:
* contacting a Spanish teacher in your school district for help... * asking your students' parents to help... * contacting the foreign language teacher preparation professors at colleges or universities near you... * looking for documents that other schools have already written and translated for your own use...