How to read your kids’ school report card

The Ohio Department of Education each year releases a report card for each school district in the state, with scores and ratings on many factors.

» MORE: State report cards out Thursday; schools say look at bigger picture

Here are some of the most important, and what they mean:

Achievement: Grades schools based on their overall scores on state tests. Performance index is weighted 75 percent, and "indicators met" is the other 25 percent. There are 26 state tests (plus a "gifted" indicator), and schools need 80 percent of students to score proficient for the school to meet each test indicator.

Performance index: A subset of Achievement, this is the most detailed measure of state test performance. It goes deeper than just a "yes or no" on proficiency, giving more credit for the highest performers and less credit for lowest scorers to create an overall score.

» SEARCH: How did your school perform on the 2016-17 state report card?

Progress: Judges whether students made one year's worth of academic growth from last school year. One year of growth equals a "C" grade. Generally, it is based on what statewide percentile students score in each year.

Gap closing: Reports whether each subgroup of students (by race, economics, disability, etc.) narrowed achievement gaps when compared with the student body as a whole.

» REPORT CARD: Clark, Champaign schools score low for achievement on report cards

Graduation rate: Shows diplomas earned within four or five years of starting ninth grade. The four-year rate measures students who would have normally become the class of 2016. The five-year rate measures the class of 2015.

» RELATED:  Many local "A's" for student growth; Dayton scores mixed

K-3 Literacy Improvement: Measures what percentage of struggling readers get back on track to proficiency between kindergarten and third grade. Schools with less than 5 percent of kindergarteners scoring below grade level are not graded.

Prepared for Success: Tries to measure how well prepared students are for the future, via ACT/SAT scores, honors diplomas, industry credentials and participation in college credit-bearing programs.