Ok, on the very last day of May, DONE:

20- bankers box full of old teaching materials, recycle bin, I'm counting that as 20
20- another bankers box, full of old magazines and catalogs, also to the recycle bin
30- box full of odds and ends, took to daughter's house, she pulled one thing out and said she didn't want the rest. Dropped off at Goodwill yesterday.
4- phone books, 2 still shrink-wrapped from last year, and 2 from this year. Recycle bin.
28- pieces of clothing from my closet; didn't wear them to work at all this whole school year, Goodwill.
3- pairs of worn out socks, trash.

Grand total: 105, 100 plus 5 for the 5th month!

(hard to believe I'm still able to discard 100+ things every month... I honestly haven't bought anything but groceries for a long time now)