I didn't find any education-related leads today. I did, however, receive a great lead from Liz on writing test items for Pearson: http://www.pearsonedmeasurement.com/.
I do have personal experience with this one that might be helpful to you. From the main page, you can choose different temporary scoring (on-site), scoring essays at home, SAT essay scoring, and test development.
I applied for test development opportunities in February of 2007. I promptly heard nothing from them. The end web page was an automatic thank you, but no confirming email. Be sure to document your application if you keep track of such things.
October 2007 I received an email inviting me to write test items. There were emails and paperwork back and forth for a bit. Then I had to attend a workshop locally. The workshop was one weekday evening and a Saturday. There were maybe 30 people in the room to write items. The folks from Pearson trained us on how exactly they wanted these written, and then we spent most of Saturday working with a partner. No one was expected to finish their assignment within that time frame. We had another week or so to get it turned in. They paid us for attending the workshop and for each item we wrote. It was decent pay for the time I put in. I will say that the pay per item was twice what I'd been getting, however, they required so much more work than the lower paid items that I felt I earned every penny. The difference in item writing is for another post.
Since then, I've heard nothing more from them. I did re-enter my information in the database, but I'm fairly sure it's going to be a long wait.
Scoring Essays at Home
In the same February of the same 2007, I submitted my application for scoring essays at home. It was February 2008 before I heard anything. I received an invitation to score essays at home for a state test. They gave a three-week scoring window asking for a minimum of 20 hours per week (50 hours max). I had to take a computer inventory to see if my computer and internet access could play nice with the others. It can't. Okay, my computer can, but my internet access is questionable. Apparently Pearson's computers don't like working with wireless internet access. Today's automatic email from Pearson informed me that I can upgrade to a compatible form of internet access, and they will check my system again. I do have that option, so I will be sending in the upgrade email.
I thought you might like to know how long the wait was. If you do apply, don't get discouraged if you don't hear anything for a while. State writing tests happen in the spring and results need to be turned back in to the schools by the end of the school year. SAT tests happen all year long.