What does CTOBS stand for?

CTOBS stands for Criterion Test of Basic Skills

This definition appears rarely

Samples in periodicals archive:

The Criterion Test of Basic Skills - 2 provides a criterion-referenced assessment of reading and arithmetic skills. The manual contains more than 250 teacher-directed...

Burt Word Reading Test; Cloze Reading Tests, 1-3 Second Edition; Criterion Test of Basic Skills - 2 (CTOBS-2) Diagnostic English Language Test (DELTA)