Program Type Evidence of effectiveness Effects┬╣
Jamaica Study
Yes
32.00
    Healthy Families America (HFA)
    Yes
    24.00
      Infant Health and Development Program (IHDP)
      Yes
      22.00
        Early Head Start (EHS)
        Yes
        12.00
          Nurse Family Partnernship (NFP)
          No
          37.00
            Home Instruction Program for Preschool Youngsters (HIPPY)
            No
            21.00
              Parents as Teachers (PAT)
              No
              6.00

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                Including those without statistically significant effects

                1 Effects are expressed in learning points. Tests are standardized so that they have a standard deviation of 100. To benchmark effects, a third grader improves her scores in 40 learning points in one year.
                = 1-5 LP , = 6-10 LP, = 11-15 LP, = 16-20 LP, = 20+LP.
                = No effect or negative effect