I can't speak too much for Education, however, I am a Corporate Recruiter for a large Hospital.
Very frequently I meet with and coach candidates on transitioning employers. What I would definitely recommend is asking anyone you know at the other school what some of their struggles are. Too often I find with referrals that only a positive picture is painted by someone recommneding that peer look into a position at their employer. Understandably, people are excited about the prospect of a friend "joining their team", so they leave out the "dirty laundry."
You want to make sure you have a realistic job preview. After having this discussion, you may find that you would face similar frustrations in a new opportunity.
Also, don't discount the value of your own personal establishment. There is great intrinsic value in feeling like one of the "old souls" in an organization. The vulnerability of being "the new guy" can be a very difficult transition.
As far as the money is concerned, $2500 (the median of your possible pay increase range), factors out to approximately $145 monthly after taxes, hardly worth a drastic career transition. My advice would be to discount the $$ as a key factor in your decision.
Assess the prospect of a new opportunity as closely as you do your present position. Value the intrinsic rewards that come with experience with one employer, and best of luck!!
