There are a large number of summer art/photography programs that are available locally and abroad and for a full range of times (weekend to multi-week).
Check a few out below!
http://photography.nationalgeographic.com/photography/photocamp/
http://www.gobroadreach.com/summer-programs-for-high-school-students.asp
http://www.gobroadreach.com/program-overview-for-photography-teen-summer-camp-in-panama.asp
http://www.oxbridgeprograms.com/academics/courses.phphttp://specialprograms.tisch.nyu.edu/page/studyabroad.html
http://www.icp.org/school/teen-academy
http://www.newschool.edu/parsons/summer-programs/
http://www.sva.edu/special-programs/pre-college-program/summer-program
http://www.fitnyc.edu/10064.asp
https://www.purchase.edu/Departments/AcademicPrograms/CE/summer/PrecollegePrograms/PhotographyInstitute.aspx
http://www.oce.nysed.gov/nysssa/SMA/index.html
http://www.nyfa.edu/summer_camp/programs/photography/4week_photography.php
http://www.socapa.org/photographycamps/
http://www.choicecamps.com/recommended/photography-summer-camps/