My guided reading {readers workshop} rotation is down pat.  It is the most reliable thing in my classroom.
I write the kids' names on the board so their name is in the same place every day, which eliminates a lot of "Where am I going?" when it's their center time.  The shapes next to their names are my 4 groups.  {I call them by shape but use the colors to match baskets or folders that differentiate the work at each center.}  The picture cards are the open centers which I rotate each afternoon.  {Some years I have used more than 5 centers so students don't necessarily get to them all in a given week but it also means I don't have to switch out activities as often!}  Easy.  Cheesy.
However {dun dun dun}, it is now the 6th week of school and my guided reading routine has changed 4 times.  No joke.  It is no wonder we're still trying to learn procedures...they change as soon as we get them down pat.  {these are out of my control changes, FYI, not just changes in groups due to data.  enter big smile here.}
I 
think hope have decided that we finally have the schedule set.  Unfortunately, it leaves me with the question...how in the world am I ever going to remember who goes where on a which day?!  Thank you, Google.  Here are some ideas I've come across in case you're also looking for a way to display your reading groups.  Even if they don't work perfectly for my wacko rotation, they're still great ideas and they may work for you!
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Lesson Plan SOS} uses student pictures on a "Now Starring" board to remember who's in each group.
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What the Teacher Wants} uses a weekly calendar to help her remember when to meet with each group.
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Mrs. VanDyke} gives each group a number and rotates them each day for the students to remember where they go when.
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Leaping Into Third} uses the SmartBoard.  Easy to change and a big display for everyone to see!
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Down Under Teacher} uses a separate poster for each group to remember where to go.
So many options!  I'd like to keep something similar where the students names don't move {unless their ability group changes} but that also includes centers, my group, the TA group and the ESL on group, on days that she is with us.  Also, my OCD won't allow for a big grid hanging at the front of the room. In the meantime, I'm using this chart in my binder and just calling them out.  {not so efficient}
Any other ideas??  How do you organize and display your groups?!