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Graduation Rate

Why does the state's graduation rate and dropout rate not add up to 100%?


Graduation rates and dropout rates are very different. A graduation rate is reported each year but includes information from a cohort of students which takes four or five years to report. For example, in a graduation rate, not all non-graduates are considered dropouts.

What is a graduation cohort?


A cohort in the graduation rate calculation starts with a group of students entering ninth grade for the first time. The cohort is adjusted to add students that transfer in and subtract students that transfer out during a four year or five year time period for calculating a graduation rate.

How does Iowa calculate its graduation rate?


Iowa started reporting a cohort graduation rate starting with the Classes of 2010. This method of calculating rates is consistent with the of the National Governors Association cohort graduation rate. The form is as follows:

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Printed from the Iowa Department of Education website on May 20, 2018 at 7:30am.