Elem. Library Sched. time

[Dianne <DEMS162@UABDPO.BITNET>]

     I am interested in any information that would verify what are appropriate
lenghs of time for scheduling elementary students in the library.  This would b
e a fixed schedule for each class on a grade by grade level. Example: 30 min.
for all elem. age levels or 25 - 30 min. for grades K through first, 30 - 35
min. for grades 2 - 3 and 35 - 40 min. for grades 4 - 5.  Are there any such
written recommendations based upon the students age and attention span?