Parker is a woman in the Principal's Office. The initial appearance of Mrs Parker is "Mrs. Parker is sitting at her desk looking at an open folder. ".
The description of Mrs Parker is "When she came to the school as the new principal last year, you were surprised at how young Mrs. Parker was. She is kind of plain looking, and the other kids call her 'fat', but she has kind, brown eyes. She's always seemed nice to you, but a few of your friends have told you she can be pretty mean when she needs to be."
The printed name of Mrs Parker is "Mrs. Parker". The nickname is "the principal". Understand "principal" or "miss/ms/mrs p" as Mrs Parker. Mrs Parker is familiar.
Book 8 - Mr Frank (Custodian)