Join or Renew your TSI membership. Please fill out the online form below. When you are finished hit ‘Submit’ and you will be taken to the payment page where you can select your membership category.
For a downloadable PDF form please click here, print out the form, and mail it to:
Membership is on a calendar year basis (January 1-December 31). Benefits include:
- Free online subscriptions to our premier journal Theory in Action.
- Members are given 50% discounts on all our services and fees.
- Save up to 25% on all TSI merchandise
Membership Categories and Annual Dues:
- Regular. $35
- Student. Full-time students currently enrolled in accredited institutions. $25
- International Associate. Individuals in low-income countries*. $25
* People from OECD member nations are excluded from this category and encouraged to join as regular or student members.