Since 2000 fees have risen by at least 6% every year, according to Horwath Clark Whitehill, a consultancy—double retail-price inflation and half as much again as the growth in wages.

根据Horwath Clark Whitehil顾问公司的调查，自2000年，学校费用以每年至少6%的速度增长，是零售价格通胀指数的两倍，同时也是工资增长速度的一半。

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Helen Blackburn, Whitehill's commercial manager, worked as a volunteer in Lusaka, Zambia, for over three years.

BBC: Tam Cowan and Stuart Cosgrove are supporting the campaign

Whitehill and Valerie Venegas, the lead agent on the case, also interviewed former Sea Org members in California.

NEWYORKER: The Apostate

Whitehill and Venegas worked on a special task force devoted to human trafficking.

NEWYORKER: The Apostate