Theatre Links 
If you remember a title or author but don't know who the publisher is, search an online database of major publishers at www.findaplay.com, a free service offered by Playscripts.com.  
 
Bakers Plays
Broadway Plays
I.E. Clark
www.directplays.com
Dramatic Publishing Company
Dramatist Play Service
Samuel French, Inc.
www.broadwayjr.com
Smith and Kraus
Tams-Witmark Music Library, Inc.

 

 

Publishers
I Love NY Theatre
If you want to know what's playing in the Big Apple or you just want to see a very interesting theatre site, try this.

Jack Wolcott's Theatre History on the web
This huge site not only contains an enormous amount of theatre history 
resources, but also material on lighting, stage design and other areas of 
technical theatre.

 Ed Helper.Com 
This site has numerous lessons plans for a wide variety of theatre subjects

 Learn Improv. 
The place to be if you need specific ideas on improv exercises or situations. I refer to this site a lot when planning my classes. Worth the trip! - Len Radin

High School Tech
Have your tech students use this as a handy reference for tech information.

 The Costume Gallery
See photos of costumes and description of costume from many periods.

 Method Acting procedures 
A hands on, classroom based collection of ideas to reinforce "Method Acting" techniques. Well worth the visit and lots of ideas.

Improv Encyclopedia

A nice description of hundreds of improv games and exorcizes. 

... and now for My "Dozen Gems Awards." These are some of my favorite links to high school theatre departments that are members of the Thespian Society
These are just a few high schools that I thought have interesting, useful or unusual theatre department web sites. For a more complete list of thespian troupe links see the International Thespian Society listing.
They run a great theatre program in Campbell, California. Of particular interest is the information the site has for students that are interested in writing a theatre critique. Check it out!
MARY KRELL-OISHI is not only the director of this program, but she's quite the prolific playwright as well. Need a monologue in a hurry? Check out this site from Fullerton, California.
Sharon Morrow runs quite the program. Check out the clear and expressive production photos, creatively displayed. 
Castle Performing Arts Center  Kaneohe, Hawaii,  troupe # 566
Anyone who has thrilled to any Castle mainstage production at the International Festivals would agree that this is one of the very best theatre programs in the country. Some of my students go to international just to see Castle perform!.
International Thespian Society and the Educational Theatre Association

Here is a huge amount of information on the largest educational theatre organization in the world. There is a listing of members, information on festivals, a large list of theatre and education links and MUCH more. If your school does not have a Thespian troupe, I highly recommend you see this site. Being a member of Thespians and the Educational Theatre Association has been among my most worthwhile professional activities.
I have found these links valuable as a constant source of new ideas, inspiration, and reference. For a much more extensive list of links, see the Educational Theatre Association web page.
Supplies
headsets
backdrop rentals
supplies/lighting
supplies
supplies
supplies/lighting
supplies
lighting, sound (great company)
lighting
plans for stage design
backdrop rentals
curtains
costumes
bulbs                             
Here is a link to the Mill City Productions
MCP is a community theatre formed by Drama Team alumni.
 
Looking for the script to a high school musical? Want to buy theatre lights? This is the place to be !

Theatre Links.com
This site contains an enormous number of links on many facets of theatre.

Downloading their helpful thatre policy handbook is worth the visit.
Here is a link to our film on Theatre Etiquette that won the International Film competition on theatre etiquette in 2011:
http://www.youtube.com/watch?v=lRwFj7aQZyo