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County Science Fairs (PA)

Information on this page has not yet been updated for 2019. Please check back later or visit DVSF's Regional Fairs page for the most recent info.

All Counties: The road to the International Science and Engineering Fair begins at the county level. All students who wish to compete must enter the science fair of the county in which they reside. Students must complete ISEF paperwork and submit copies of the appropriate forms (Forms 1, 1A, & 1B at the least) to the appropriate Science Fair Director before beginning their experiments. If the experiment requires extra paperwork, the project must be approved before starting. Instructions and rules may be found at Remember, you keep the original documents!

Philadelphia: The George Washington Carver Fair, open to Philadelphia residents in grades 4 to 12, is usually held in February at the Academy of Natural Sciences (grades 4-6) and March at Temple University (grades 7-12). For more information, visit or contact Rachel Cherry at

Delaware: The Delaware County Science Fair (DCSF), open to students in grades 6 to 12, is usually held the first Monday in March at the DCIU. (Set-up is on Sunday afternoon.) This fair is very friendly toward homeschoolers. Delaware County students in grades 6 to 12 may enter this fair directly, without first competing in a local or school science fair (including the GPHSF). To enter, you must submit a registration form and fee, in addition to the ISEF paperwork, to the DCSF Registrar in February. For more information, visit

Chester: The Chester County Science Research Competition (CCSRC), open to students in grades 4 to 12, is usually held in March on two different days (one day for grades 6-12, and another for grades 4-5), at the Center for Arts & Technology, Phoenixville. The CCSRC allows only 20 homeschoolers (!) to participate (10 from grades 4 to 5 and 10 from grades 6 to 12). Therefore, homeschooled Chester County students who wish to enter the CCSRC must enter the Chester County Homeschoolers Science Fair, which will be held Saturday, January 20. Contact Lora Newman at for details.

Montgomery: The Montgomery County Science Research Competition (MCSRC), open to students in grades 6 to 12, is usually held in March at Ursinus College. Before any student can enter, the adult sponsor (i.e., parent) must attend a 1-hour Rules Interpretation Meeting (date TBA).
For more information, visit the MCSRC website or email Phil Rittenhouse at

New Jersey

New Jersey homeschoolers may want to consider the NJ Home Educators Science Fair. For information, email Roy Costa.

From the county science fairs, winners advance to the Delaware Valley Science Fairs, scheduled for April 3-5, 2018, at the Greater Philadelphia Expo Center in Oaks. (Set-up is April 3, judging is April 4, and awards ceremony is April 5.) This fair draws from 13 counties in Delaware, South Jersey, and Southeast Pennsylvania.

From the regional science fairs, 9th to 12th grade winners advance to the International Science and Engineering Fair, scheduled for May 13-18, 2018, in Pittsburgh.

by Lisa Swieson, GPHSF Director
2001-2017 Greater Philadelphia Homeschool Science Fair.



Questions? Contact the GPHSF Director. Last modified: 21 December 2017