JJDP Act Native American Pass-Through Calculation
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Estimating 2009 Tribal Youth Population Ages 0-17


The adjustments discussed in the Methodology were accomplished by calculating two weights that are then applied to the tribes' reports to BIA of the number of youth under age 16 in 2005. Calculating the weights requires three estimates from the Census Bureau: the number of Native American youth under 16 in 2005, the number of Native American youth under age 18 in 2005, and that same number in 2009 (the most recent year for which estimates are available). The table below shows these three estimates for Oklahoma.

Oklahoma
2005 Native American
Age 0 to 15
2005 Native American
Age 0 to 17
2009 Native American
Age 0 to 17
93,807 106,151 105,666

The first weight (AGE) is used to adjust the reported youth population ages 0-15 to an estimate of the youth population ages 0-17.

AGE =   2005 Native American Population Age 0-17 / (divided by)
    2005 Native American Population Age 0-15
 
=   106,151 / 93,807 = 1.131589

The second weight (YEAR) is used to adjust the reported youth population in 2005 to an estimate of the youth population in 2009.

YEAR =   2009 Native American Population Age 0-17 /
    2005 Native American Population Age 0-17
 
=   105,666 / 106,151 = 0.995431

The two weights AGE and YEAR are then applied to the BIA 2005 reported population for tribal youth ages 0-15 (for Oklahoma, this number is 143,828 for tribes with law enforcement functions) to arrive at the final estimate of tribal youth population ages 0-17 in 2009.

Final Estimate =   BIA reported population x AGE x YEAR
=   143,828 x 1.131589 x 0.995431
=   162,010

This number, 162,010, is the estimated number of tribal youth ages 0-17 in 2009 in Oklahoma tribes with law enforcement functions.

As stated in Section 223(a)(5)(C) of the Juvenile Justice and Delinquency Prevention Act of 1974, as amended, the Native American Pass-Through amount is calculated by subtracting the State Advisory Group (SAG) allocation from the Formula Grant Allocation and multiplying that by 2/3 and then multiplying that figure by the percentage of Native American youth under 18 in tribes with law enforcement functions in the state. Using the estimate we just calculated for the population of Native American youth under 18 in 2009, below is an example of the formula used to reach the Native American Pass-Through amount for Oklahoma.

Total State Native American Youth Pass-Through Final Estimate =
 >  FY2011 Formula Grant Allocation - FY2011 SAG Allocation
 >  x 2/3
 >  x (2009 Estimate of Juvenile Youth Population in Eligible Tribes /
      2009 Estimate of Total Youth Population in State)
= $602,144 - $30,000 = $572,144
  $572,144 x .6666 = $381,391
  $381,391 x (162,010/918,849) = $381,391 x 0.176318
= $67,246 (with some rounding error)
This amount, $67,246, is the final dollar amount for Oklahoma's tribal allocation.