Do not attend a 'for profit' school
E.g. Devry, ITT-Tech, Westwood College, College America, IBMC, etc
Attend a public university, or any organization that is "regionally accredited". Nationally accredited schools will (mostly) get you a degree that isn't worth the paper it's printed on.
That is the best advice I can give. I used my VA Voc Rehab benefits (can be a little better than using the GI Bill, context permitting) and am attending ITT-Tech. Worst. Life. Decision. Ever. For Profit schools lure you in with all kinds of promises. Once you sign, good luck getting anything from them. I asked their student support team what their exchange server address was so I could use outlook and was told "we don't support non-company devices." Took me about an hour of command line utils and searching until I found their mail server. Then I wrote a scathing email to department heads, deans and executives. Their reply? "...you have the server address now, is this resolved?"
Anywho. If your goal is systems administration, Network Systems Administration is going to teach you all about networking (routers/switches/firewalls/servers/etc). Are you wanting to stay more on the 'end-user support' side of the house? The fields of IT are many and specializations abound. It all kind of depends on what you want to be doing in 10 years.