EXHIBIT I

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the shares of Planet Payment, Inc.

This Agreement may be executed in any number of counterparts, each of which shall be deemed an original.

EXECUTED as of this 12th day of February, 2014.

SIGNATURE

Camden Partners Strategic Fund II-A, L.P.
By:	Camden Partners Strategic II, LLC
Its:	General Partner
By:	/s/ David L. Warnock
	David L. Warnock Managing Member
Camden Partners Strategic Fund II-B, L.P.
By:	Camden Partners Strategic II, LLC
Its:	General Partner
By:	/s/ David L. Warnock
	David L. Warnock Managing Member
Camden Partners Strategic II, LLC
By:	/s/ David L. Warnock
	David L. Warnock Managing Member
Camden Partners Strategic Fund III, L.P.
By:	Camden Partners Strategic III, LLC
Its:	General Partner
By:	Camden Partners Strategic Manager, LLC
Its:	Managing Member
By:	/s/ J. Todd Sherman
	J. Todd Sherman Managing Member

Camden Partners Strategic Fund III-A, L.P.
By:	Camden Partners Strategic III, LLC
Its:	General Partner
By:	Camden Partners Strategic Manager, LLC
Its:	Managing Member
By:	/s/ J. Todd Sherman
	J. Todd Sherman Managing Member
Camden Partners Strategic III, LLC
By:	Camden Partners Strategic Manager, LLC
Its:	Managing Member
By:	/s/ J. Todd Sherman
	J. Todd Sherman Managing Member
Camden Partners Strategic Manager, LLC
By:	/s/ J. Todd Sherman
	J. Todd Sherman Managing Member
Camden Partners Holdings, LLC
By:	/s/ J. Todd Sherman
	J. Todd Sherman Chief Financial Officer
Donald W. Hughes
/s/ Donald W. Hughes
David L. Warnock
/s/ David L. Warnock