Graduation episode?

I've never seen the reunion episode where the Season 1 characters come back. Can anyone let me know what the episode is about and how the former characters are part of it? Any ballpark figures of when it will air again?

[Ags2000]

Well, it takes place after Mrs. G leaves so it won't be on for awhile now. If they play the rest of the seasons, then it should be on in the next month or so.
It is a really cute episode that shows how much the girls have changed. Nancy is engaged to Roger and it is one of the reasons the girls are getting bak together. Cindy is a model. Sue Ann tells everyone that she has this really good high executive job (I don't remember now what ir is). They kind of ignore Jo this entire episode. Jo kind of stays to herself and doesn't do anything with all of the girls.

D