Answered Questions

To answer your specific question you have to consider it on a broader level, not just how videotaping rehearsal affects the young actor, but simply how videotaping affects any actor. Then narrow the comments on how this can improve the beginning level high school students performance.
 
I first found an interesting thesis.
http://etd.lib.ttu.edu/theses/available/etd-05122009-31295000277920/unrestricted/31295000277920.pdf
 
This is a Google book with information on benefits of videotaping actors before a movie shoot-
 http://books.google.com/books?id=xFNSh_K_uKkC&pg=PA132&lpg=PA132&dq=videotape+actors+rehearsals&source=bl&ots=u-rypmQJce&sig=moyHiv8-6_jakstdJ83yI6cNcFQ&hl=en&ei=JDJ5Tq76K5G3twe64PkL&sa=X&oi=book_result&ct=result&resnum=7&sqi=2&ved=0CEcQ6AEwBg#v=onepage&q=videotape%20actors%20rehearsals&f=false
 
An article on recording business presentations for the purpose of improving speaking techniques:
https://search.ebscohost.com/login.aspx?direct=true&authtype=ip,shib&db=a9h&AN=23656849&site=ehost-live&custid=bre1​
 
 I searched in the Academic Search Complete database initially. I think looking for synonyms is your best bet here as well. Video recording is synonymous with videotaping and video you can pair it with theater, plays, presentations, performance, performance evaluation etc. I also looked under the Arts and Humanities resources in the Theater section and tried some theater related databases including the International Bibliography of Theater and Dance. From that database I discovered the following two articles.
 
This is definitely a keeper -
https://search.ebscohost.com/login.aspx?direct=true&authtype=ip,shib&db=ibh&AN=12651131&site=ehost-live&custid=bre1
 
And this should work for you as well.
https://search.ebscohost.com/login.aspx?direct=true&authtype=ip,shib&db=ibh&AN=45154527&site=ehost-live&custid=bre1
 
Also look for book resources on rehearsal techniques and actor's performance evaluation through videotaping.