BIG BROTHERS BIG SISTERS IS THE ONLY PREVENTION PROGRAM IN MONTANA PROVEN TO AFFECT A BROAD RANGE OF SOCIAL ISSUES. PROGRAM EVALUATIONS CONSISTENTLY SHOW THAT AFTER ENTERING THE PROGRAM, CHILDREN ARE LESS LIKELY TO BECOME DELINQUENT, USE ALCOHOL, TOBACCO OR DRUGS, BECOME PREGNANT OR DROP OUT OF SCHOOL. THUS, INVESTING IN BIG BROTHERS BIG SISTERS IS MORE COST EFFECTIVE THAN INVESTING IN SINGLE ISSUE PREVENTION PROGRAMS.