About Us

DRC | CTB is a leading publisher of educational assessment solutions for the early learner, K-12, and adult basic education markets.

One Response to About Us

  1. Tim H says:

    Picked up the new TASC book (ISBN 978-0-070182386-9) last night, and I think I found my first mistake. Can someone tell me if it’s me? Try doing question 19 on page 219 (standard deviation question) which is part of the math practice test. I think a step was left out when they answered it.

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