SCHEDULE 13G

EXHIBIT 1

JOINT FILING AGREEMENT

          The undersigned hereby agree that the Schedule 13G relating to shares of Grand Canyon Education, Inc. to which this Agreement as to Joint Filing of Schedule 13G is attached as an exhibit is filed on behalf of each of them.

          IN WITNESS WHEREOF, the undersigned have executed this Agreement on the 17th day of February, 2009.

By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
220 MANAGEMENT, LLC
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director
220 GCU GP, L.P.
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director
220 GCU, L.P.
By:	220 GCU GP, L.P.
Its:	General Partner
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director
SV ONE GP, L.P.
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director

SV ONE, L.P.
By:	SV One GP, L.P.
Its:	General Partner
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director
220 EDUCATION, L.P.
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director
220 SIGED, L.P.
By:	220 Education, L.P.
Its:	General Partner
By:	220 Management, LLC
Its:	General Partner
By:	/s/ Charles M. Preston III
Name:	Charles M. Preston III
Its:	Managing Director