School suspension rates declined significantly within SWPBIS schools but not within comparison schools, though the two conditions were not tested against each other¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2010 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? The percentage of students receiving suspensions significantly declined over time for SWPBIS schools (Z = –2.17, p = .03, d = .27) but not for comparison schools (Z = –1.54, p = .12). → Catherine P. Bradshaw 2010

Evidence¶

Catherine P. Bradshaw 2010¶

Catherine P. Bradshaw, Mary M. Mitchell, & Philip J. Leaf. (2010). Examining the Effects of Schoolwide Positive Behavioral Interventions and Supports on Student Outcomes: Results From a Randomized Controlled Effectiveness Trial in Elementary Schools. Journal of Positive Behavior Interventions, 12(3), 133-148. https://doi.org/10.1177/1098300709334798

q3 · i? · within-school pre-post change only, d = .27; no treatment-control effect size · causal · r2

Wilcoxon signed ranks test on school-level suspension rates from the Maryland State Department of Education, baseline through Year 4, in the randomized trial of 37 elementary schools.

"was nonsignificant for the comparison schools (Z = –1.54, p = .12) but was statistically significant for the SWPBIS schools (Z = –2.17, p =.03, d = .27)"

Discussion¶

Related Claims¶

- SWPBIS reduces the odds of receiving an office discipline referral — the general claim this finding bears on, with the studies behind it¶

• SWPBIS does not significantly reduce out-of-school suspensions in this trial — related
• In SWPBIS-trained schools the share of students with an office discipline referral fell slightly but significantly (18.8% to 18.1%), with no comparison-school data — related