Level of Evidence

At the end of each post, you will find a rating for that study, based on the criteria of the Blueprint Standards for Evidence.

Level Rating Definition



Experimentally proven: multiple independently replicated randomized controlled trials



Experimentally proven: randomized controlled trials with replication


Very Good

Experimental: data from studies with comparison groups (e.g., quasi-experimental, randomized controlled trials)



Research informed: data from surveys, correlational studies, pretest-posttest outcomes (no comparison group)


Opinion informed: data from anecdotes, testimonials, and personal experiences




Type of Intervention

Below are operationalized definitions for the type of intervention conducted in each of the evidence-based initiatives. Each initiative is classified as one (or in some cases more than one) of these categories.

Type of Initiative


Before/Afterschool Activity

The initiative was conducted before or after regular school hours.

Classroom Activity

The initiative was conducted in the classroom by the school teacher.

Community Partnership

The initiative involved actors from other community organizations or partners (e.g universities, hospitals, police department, local businesses).

Counseling/Psychological (Universal)

A Counseling or psychological initiative was delivered to all students in a school grade or level.

Counseling/Psychological (Strategic)

A Counseling or psychological initiative was delivered to a specific group of students identified as at risk or in need of greater attention.

Counseling/Psychological (Intensive)

A Counseling or psychological initiative was delivered to a very specific group or individually to students in need of intensive support from a counselor/psychological professional.

Educational or Curriculum

The initiative consisted of educational lessons or curriculum modifications.

Environmental Change

The initiative consisted of changes to the physical/built environment of the school (e.g. cafeteria, infrastructure, marketing posters).


The initiative was implemented by a decision, procedure, protocol, principles, rules, or guidelines adopted through the school or district.

School Wide Activity

The initiative included activities for the entire student population (e.g., school breakfasts, recess, special campaigns).

Literature Review

A meta-analysis or systematic literature review provided information on an initiative(s).

Each search result will provide a description of the initiative that was conducted and the results from the study that evaluated the implementation of the initiative. The reference for the article is provided as well as links to the program website if these are available.