| Baccalaureate School for Global Education, Queens, NY, USA | 344 | 1776 | School | Request membership |
| Barringer High School, Newark, New Jersey, USA | 2 | 0 | School | Request membership |
| Burke High School, Omaha, NE, USA | 3 | 144 | School | Request membership |
| Chelsea Preparatory School, Durban, South Africa | 4 | 0 | School | Invite only |
| Christopher Columbus Campus High School, Bronx, NYC, USA | 3 | 2 | School | Request membership |
| Class 508 at I.S. 190, Bronx, NY, USA | 2 | 0 | School | Request membership |
| Dillon Valley Elementary Dual Immersion School, Colorado, USA | 3 | 0 | School | Request membership |
| East Brooklyn Community High School, Canarsie, NYC, USA | 33 | 31 | School | Request membership |
| East-West School of International Studies, Flushing, NY, USA | 225 | 2489 | School | Request membership |
| Eleanor Roosevelt High School, New York, NY, USA | 197 | 528 | School | Request membership |
| Florin High School, Sacramento, CA, USA | 22 | 2 | School | Request membership |
| Flushing International High School, Flushing, NYC, USA | 4 | 0 | School | Request membership |
| Fredericksburg Academy, Fredericksburg, VA, USA | 2 | 0 | School | Request membership |
| Hanover-Horton High School, Horton, MI, USA | 2 | 0 | School | Request membership |
| High School for Construction Trades, Engineering and Architecture, Queens, NYC, USA | 2 | 2 | School | Request membership |
| Hopkinton High School - Hopkinton, Massachusetts, USA | 2 | 0 | School | Invite only |
| Houston Christian High School, Houston, TX, USA - Class of 2012 | 2 | 0 | School | Request membership |
| Instituto Carlos Gracida A.C., Oaxaca City, Mexico | 4 | 1 | School | Request membership |
| International High School at Lafayette, Bensonhurst, Brooklyn, NY, USA | 2 | 0 | School | Request membership |
| J.R Masterman Laboratory and Demonstration School, Philadelphia, PA, USA | 2 | 0 | School | Request membership |
| Jacksonville State University, Jacksonville, Alabama, USA | 2 | 0 | School | Request membership |
| John Bowne High School, Queens, NY, USA | 3 | 0 | School | Request membership |
| Jonathan Levin High School for Media & Communications, Bronx, NY, USA | 4 | 6 | School | Request membership |
| Judge Memorial Catholic High School, Salt Lake City, Utah, USA | 272 | 2573 | School | Request membership |
| Kenneth R. Olson Middle School, Tabernacle, NJ, USA | 3 | 0 | School | Request membership |
| learning.21st at West Junior High, Minnesota, USA | 19 | 7 | School | Request membership |
| Long Island City High School, Queens, NYC, USA | 2 | 0 | School | Request membership |
| Morris Hills High School, Rockaway, New Jersey, USA | 2 | 0 | School | Request membership |
| Mott Hall High School, NY, USA | 14 | 2 | School | Invite only |
| Mr. Mayo's Class, 7th graders in the Washington D.C. area, USA | 17 | 6 | School | Request membership |
| Mt. Blue High School, Farmington, Maine, USA | 2 | 0 | School | Invite only |
| Nespelem School, Nespelem, WA, USA | 16 | 12 | School | Invite only |
| Oak Hill Montessori Junior High, St. Paul, MN, USA | 2 | 0 | School | Request membership |
| Oaklands School, Tower Hamlets, London, UK | 17 | 0 | School | Request membership |
| Ogallala High School, Ogallala, NE, USA (12th Grade English) | 7 | 1 | School | Request membership |
| Olathe Northwest High School | 1 | 0 | School | Request membership |
| Oostvaarders College, Almere, Netherlands | 17 | 4 | School | Request membership |
| Parkway North High School, St. Louis, MO, USA | 2 | 0 | School | Request membership |
| Perkiomen Valley Middle School East Collegeville, PA, USA | 2 | 0 | School | Request membership |
| PS126 Jacob August Riis/Manhattan Academy of Technology | 120 | 1 | School | Request membership |
| Queens Vocational and Technical High School, Long Island City, NY, USA | 16 | 0 | School | Join |
| Rafael Hernandez Dual Language Magnet School, Bronx, NY, USA | 2 | 2 | School | Request membership |
| Ramona High School | 62 | 18 | School | Request membership |
| rl txt: Central Arizona Writing Project's Young Writer's Institute, USA | 4 | 11 | School | Request membership |
| Royal Heights Elementary, Joplin, MO, USA | 2 | 0 | School | Request membership |
| Rutgers University, Graduate School of Education; New Brunswick, NJ USA | 2 | 0 | School | Request membership |
| San Antonio College in San Antonio, TX, USA | 48 | 22 | School | Request membership |
| Satellite Academy High School - Midtown, NYC, USA | 2 | 0 | School | Request membership |
| Schilling Elementary, Salina, KS, USA | 2 | 6 | School | Request membership |
| School of Cooperative Technical Education, Manhatten, NYC, USA | 2 | 0 | School | Request membership |
| Shanghai Community International School (SCIS), Shanghai, China | 2 | 0 | School | Request membership |
| Smith Elementary | 21 | 0 | School | Invite only |
| Stillwater Junior High, Stillwater, OK, USA | 2 | 0 | School | Request membership |
| Students 2.0 | 8 | 21 | School | Request membership |
| Summit High School, Summit, New Jersey, USA | 2 | 0 | School | Request membership |
| Teachers 2.0 | 76 | 39 | School | Request membership |
| The Urban Institute of Mathematics, Bronx, NY, USA | 2 | 0 | School | Request membership |
| The Young Women's Leadership School of Astoria, NYC, USA | 154 | 199 | School | Request membership |
| University of Southern Maine Student Teachers & Mentors | 2 | 0 | School | Request membership |
| Varde Gymnasium | 19 | 0 | School | Join |
| West Bronx Academy for the Future, NYC, USA | 2 | 0 | School | Invite only |
| Wiscasset High School, Wiscasset, ME, USA | 67 | 284 | School | Request membership |
| Woodbridge Senior High School, Woodbridge, VA, USA | 75 | 25 | School | Request membership |
| World Issues-TCHS West, Trenton, NJ. | 7 | 0 | School | Join |
| Yarmouth High School, Yarmouth, ME, USA | 48 | 240 | School | Request membership |
| Zhiyuan Senior High School, Fengxian, Jiangsu, China | 2 | 0 | School | Request membership |
