T. technician in a high school with around 1600 students 250 staff and 800+ client computers mostly running W7

I'm looking for a better way to manage clients (deploy software, track changes, inventory etc) I like the look of SCCM 2012 features but the case studies seem to be aimed at large multi-site infrastructural rather than a single mid sized site.

Is SCCM suitable for a mid sized single site or is it aimed at much larger corporations, if so what would be more suitable

Just a note about me and my situation. I work as a technician in a school part of a team of 3. My boss seems content with a network that works (just about) not a productive well maintained network that is easy to run and maintain. I'm still fairly early on in my I.T. career so sorry if I'm not up to speed on all products.

EDIT: Thanks for all the help I'll take a look at SCE and SCCM and get some proposals drawn up to take to my boss/deputy head