Critical Thinking School 

is a WA non-profit and a Federal 501(c)3 tax-exempt organization.

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If you wish to donate to Critical Thinking School or San Juan Home School CO-OP, you may write us a check and mail it to PO Box 423, Friday Harbor WA, 98250 or send money through PayPal.

CTS funds and operates San Juan Home School CO-OP 

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Thank you!