|Benefit-Cost Summary Statistics Per Participant|
|Taxpayers||$229||Benefits minus costs||($1,630)|
|Participants||$131||Benefit to cost ratio||($0.06)|
|Others||$222||Chance the program will produce|
|Indirect||($676)||benefits greater than the costs||4 %|
|Net program cost||($1,535)|
|Benefits minus cost||($1,630)|
|Meta-Analysis of Program Effects|
|Outcomes measured||Treatment age||No. of effect sizes||Treatment N||Adjusted effect sizes(ES) and standard errors(SE) used in the benefit - cost analysis||Unadjusted effect size (random effects model)|
|First time ES is estimated||Second time ES is estimated|
Office discipline referrals^
Referrals of a student to an administrative office for disciplinary reasons.
Number or percentage of school days present in a given enrollment period.
Nonspecified substance use (i.e., alcohol, cannabis, or illicit drugs) that does not rise to the level of "disordered."
Externalizing behavior symptoms
Symptoms of externalizing behavior (e.g., aggressive, hostile, or disruptive behavior) measured on a validated scale.
Symptoms of internalizing behavior (e.g., sadness, anxiety, or withdrawal) measured on a validated scale.
|Detailed Monetary Benefit Estimates Per Participant|
|Affected outcome:||Resulting benefits:1||Benefits accrue to:|
|Externalizing behavior symptoms||Criminal justice system||$19||$0||$49||$9||$78|
|Labor market earnings associated with high school graduation||$46||$108||$59||$0||$213|
|K-12 special education||$61||$0||$0||$30||$91|
|Health care associated with externalizing behavior symptoms||$114||$32||$117||$57||$320|
|Costs of higher education||($11)||($9)||($3)||($6)||($29)|
|Internalizing symptoms||K-12 grade repetition||$1||$0||$0||$0||$1|
|Program cost||Adjustment for deadweight cost of program||$0||$0||$0||($767)||($767)|
|Detailed Annual Cost Estimates Per Participant|
|Annual cost||Year dollars||Summary|
|Program costs||$1,457||2016||Present value of net program costs (in 2018 dollars)||($1,535)|
|Comparison costs||$0||2016||Cost range (+ or -)||20 %|
Benefits Minus Costs
Benefits by Perspective
Taxpayer Benefits by Source of Value
|Benefits Minus Costs Over Time (Cumulative Discounted Dollars)|
|The graph above illustrates the estimated cumulative net benefits per-participant for the first fifty years beyond the initial investment in the program. We present these cash flows in discounted dollars. If the dollars are negative (bars below $0 line), the cumulative benefits do not outweigh the cost of the program up to that point in time. The program breaks even when the dollars reach $0. At this point, the total benefits to participants, taxpayers, and others, are equal to the cost of the program. If the dollars are above $0, the benefits of the program exceed the initial investment.|
Herrera, C., Grossman, J.B., Kauh, T.J., & McMaken, J. (2011). Mentoring in schools: An impact study of Big Brothers Big Sisters school-based mentoring. Child Development, 82(1), 346-361.