I am interested in studying online( taking  master) through university of phoenix.\nDo you think studying online is valuable or accredited as studying on campus. I really  appreciate if you tell me the advantages and disadvantages of getting a master degree online.\nThank you.
From what I have discovered, it is just as worthwhile as any physical campus. I, myself, have just begun a masters program with the University of Phoenix, and the HR people I have spoken with say there is no difference between a physical campus, and the various on-line degrees. If, however, you have never done any college courses on-line, be aware that you will work for this degree. On-line classes are more homework intensive than their physical campus counter-parts. You will work for this degree.
Iowa State has a better reputation than Iowa.  However, Iowa is getting a bunch of new faculty and is getting newly remodeled buildings, which is a definate plus.  You should definately visit them all - they pay for it anyway - and see which ones have people that you can see yourself working for and if they are places where you could be happy.  Conventional wisdom is that you should like at least three professors in the school to which you are going.  Your current advisor can give you the US News and World Report relative rankings of graduate programs.  They have one that is specifically for organic.