Take a look at http://www.find-mba.com/specializations/2/non-profit

Also, consider specialist degrees in nonprofit management.

Brandeis' Heller MBA is one of the better programs in this space.

Yale is the typical school choice for people who are interested in going into the sector - there isn't a ton of specialized curriculum, but you'll be surrounded by people who share the same interests.

Thank you both for your help with this.

<blockquote>Also, consider specialist degrees in nonprofit management.</blockquote>
Interesting - do you mean something like an MA in Nonprofit Management, or something else?

<blockquote>Yale is the typical school choice for people who are interested in going into the sector</blockquote>
I have researched this program but have been a bit put-off by the high average GMAT scores of students as well as the cost. Since my goal is to go back to the organization I'm working for now, and don't have any need for career services, would this program actually be worth the extra investment over something like Brandeis?

Yes, I am thinking of these: https://www.google.co.uk/search?q=masters+in+nonprofit+management+site%3A.edu&oq=masters+in+nonprofit+management+site%3A.edu&aqs=chrome..69i57.7980j0j4&sourceid=chrome&espv=210&es_sm=91&ie=UTF-8 Notre Dame, NYU and the New School come to mind. The mid-career program at Harvard Kennedy is designed for people like you, as is their Senior Executive Fellows programme.

If you're in Asia, then the NUS-Harvard Kennedy program is also impressive.

<blockquote>Since my goal is to go back to the organization I'm working for now, and don't have any need for career services, would this program actually be worth the extra investment over something like Brandeis?</blockquote>
Good point. A couple of things to think about:
Yale has a ranked, highly-regarded business school with a larger network. Even if your career plans are set now, the network can help with so many other things, from finding new talent for your firm to learning about what other firms are doing, etc. Brandeis, while a great school, probably won't have the same network reach. However, I would imagine that the cohorts in the Heller MBA program are probably more homogeneously focused on issues like "social good" and changing things for the better.

I think the Heller program is great if you are interested in one of their specialized concentrations - like sustainable development, child and family services, etc. - there's not another program out there, including Yale's, that can match Brandeis in its degree of specificity and depth in these areas.

Why anybody would pay over $120,000 (in the case of an MBA from Yale) if they wanted to work in nonprofit management is beyond me.

I don't know, I can see how a degree like this and the network it provides could be incredibly valuable to somebody work in a nonprofit.

It looks like of in the most recent class, the average salary of Yale grads who went into nonprofit management was around $83k, which is lower than most other industry placements (with the exception of those who went into government roles.)