idk if it technically fits those ages but a girl i know is doing it for a hs forensics competetion; anyways yeah there is a whole speech in Medea that you may have to make cuts to, or cut around and piece together, but it can be very very powerful. Its when she is making the decision to kill her children and fighting with the concept.
* She used the version written by Seneca, but Im sure the Euripedes version is fine, maybe better.
never ever ever ever ever do monologues from star spangled girl...probably the most overdone monologues of all time- auditioners cringe when they have to hear it again. on lists of things not to do for auditions at theatres star spangled girl is in bold and underlined. didn't mean to be mean about it or anything, just to inform. classical monologue usually means from before 1920's.
There's a great one in The Tempest. Miranda's first (or only-not sure) monologue. It's good and about a minute, maybe a little more.
"This table, he is over one hundred years old. If I could, I would take an old gramophone needle and run it along the surface of the wood. To hear the music of the voices. All that was said." - Doug Wright, I Am My Own Wife