If you call the museum they will arrange tours for your students. The
docents who have guided us have been wonderful. Ask what they would
suggest for your age group.
No matter how interesting the work is, Be prepared for "I'm tired" and
"When is lunch?" and "This is SO boring." I always have a few who just
CAN'T WALK ANOTHER STEP! (That's middle school--unless you take them to
an amusement park) Don't be discouraged. They get a lot out of it.
If you give work sheets or packets, be sure to ask in advance if it's
okay with the museum staff. They get nervous about kids walking around
with pens and pencils.
There is a good video, available from Crystal, called "How to visit
an art museum." Hope you have a wonderful time.