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Indicator 12 - Part C to B Transition


Percent of children referred by Part C prior to age 3, who are found eligible for Part B, and who have an IEP developed and implemented by their third birthdays.
(20 U.S.C. 1416(a)(3)(B))



  1. # of children who have been served in Part C and referred to Part B for Part B eligibility determination.
  2. # of those referred determined to be NOT eligible and whose eligibility was determined prior to their third birthdays.
  3. # of those found eligible who have an IEP developed and implemented by their third birthdays.
  4. # of children for whom parent refusal to provide consent caused delays in evaluation or initial services or to whom exceptions under 34 CFR §300.301(d) applied.
  5. # of children determined to be eligible for early intervention services under Part C less than 90 days before their third birthdays.
  6. # of children whose parents chose to continue early intervention services beyond the child’s third birthday through a State’s policy under 34 CFR §303.211 or a similar State option.

Percent = [(c) divided by (a - b - d - e - f)] times 100.


How is Colorado doing on this indicator?

School Year % of children who transition from Part C to B of IDEA by 3rd birthdays
SY 2017-18 98.4%
SY 2016-17 96.9%
SY 2015-16 97.0%
SY 2014-15 97.2%



Additional Resources


For more information, contact:

Miki Imura
Email Miki Imura
Phone: (303) 866-6976

Alyssa Ohleyer
Email Alyssa Ohleyer
Phone: (303) 866-6308

Orla Bolger
Email Orla Bolger
Phone: (303) 866-6896


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