Criteria for Levels of Evidence

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The NTACT Criteria for Levels of Evidence provides context for categorizing the evidence base for secondary transition, vocational rehabilitation, and career technical education practices for secondary students with disabilities.

The quality indicators and criteria used for categorizing the evidence base is intended for use by

  1. NTACT staff in identification of these practices, and
  2. by groups or individuals conducting special education research at the secondary level (i.e., middle, high) for students with disabilities.

For the purpose of the NTACT systematic literature reviews, the quality indicators and review criteria for group experimental and single-case designs have been adapted from the Council for Exceptional Children’s Standards for Evidence-Based Practices in Special Education. The group experimental and single-case quality indicators and criteria only apply to studies examining the effect of an operationally defined practice or program on student outcomes.

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