From someone who's been there. (Score 1)

Microsoft has a new licensing program for K12 public schools that is based on FTE. Dirt cheap. Not as cheap as free linux, but if you are more comfortable with MS, then it is a rather cheap fix. Point out that the common core standards is on the way and all of those tests are online. 4 times a year. Your 4th graders will need to be able to type! http://www.corestandards.org/ What is your student information system? What does it run on? What about a website for your school? Have you looked at purchasing refurbished computer? Some vendors will be able to sell you 1 or 2 year old desktops with a 5 year warranty. Use FOG for imaging your systems (http://www.fogproject.org/), or if you are able to get the ESS licensing based on FTE from MS, you can use their software. Technology doesn't fix education, and should never be looked upon as a quick fix. It can only assist good teachers provide a better educational environment or it can really F-things up.