We are in the same situation, with the exception that my MS classes are 7th and 8th grade only. I do teach 6th grade too, but separately.
I have my MS students for only one semester at a time. They can repeat the class in the second semester if there is no waiting list. Because of this, I have to have 4 separate semesters of curriculum in case students repeat the next semester or the next year with me.
I do two one-act plays per semester and I choose them from Plays Magazine. I highly recommend subscribing! They have classics shortened into one-acts, historical stories, etc. I start each semester with some basics; stage terminology and directions, improvisation, theatre games, monologues, two person scenes, etc. to allow them to all be on a level playing field and to help them realize that they're all able to fail and fix what failed in front of one another. I change the monologues, scenes and even the games, again depending if I have repeat students.
Later in the semester, we spend 4-6 weeks on a historical one-act play (some of the titles coordinate with what the English or History classes are doing or will do) and then 4-6 weeks on a classic one-act play. I do Charles Dickens; A Christmas Carol in Dec., Oliver Twist or Nicholas Nickleby in the Spring, depending on what students may be repeating with me. Again, the choices in Plays Magazine are wonderful; different levels of difficulty, different and educational topics, different cast sizes (and I can alter them depending on how many are in my class that semester.)
I've also used "Shakespeare in a Box," specifically "Taming of the Shrew." It's a shortened version, but still uses the original text. I had a particularly gifted class that semester that I thought could handle it and they loved it! I had one student direct it, another stage manage it, another two costume it, another did props and the rest acted. I gave them the choice to use their script or try to memorize it. Either was fine as long as they stayed in character and didn't sound like they were 'reading.'
Good luck to you!
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Gail Bartell
Drama teacher
Orangewood Christian School
Maitland, FL
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