Tuesday, July 28, 2015

Dallas must unite against achievement gaps!

Here is an additional chart with almost identical data with one critical addition, data showing progress when the ALL DISD Student Achievement Gap with all of Texas is added to the chart.
The loss of seven years of achievement is very clear:

The pattern reflected in the above chart also related to the timing when there was a significant increase in supplantation in 2012 reflected in TEA financial records.  See http://schoolarchiveproject.blogspot.com/2015/06/title-vi-complaint-against-disd.html

Below is the spreadsheet used in these graphs, especially the one above.  All the data comes from either the Texas Education Agency Snapshots of DISD and Texas data from 1995 to 2014, all that is available at this time, or from the 2015-16 Data Packet posted 7-25-15 on the DISD Data Portal.  Web site URL is http://ritter.tea.state.tx.us/perfreport/snapshot/ .  Email bbetzen@aol.com for a copy of the Excel spreadsheet below with these graphs.

We must pay attention to the past two years, 2014 and 2015, that have destroyed most of the progress documented as gained since 2005.

Dallas ISD Minority Achievement Gap 2005-2014
Two initial charts were completed on the achievement gap issues for Dallas ISD.  The first one tracked the percentage of students by ethnic/racial group who passed all statewide tests they took that year and compared DISD groups with that same group statewide.  Here is the result:

Dallas Texas Minority Achievement Gap from many perspectives, 2005-2014.

The above chart may give you an impression of progress, which may be accurate, but unless DISD and groups within DISD are catching up with the Texas groups, we cannot truly claim progress.  For that reason a study was done of the gaps for each ethnic/racial group with its statewide counter part. Was the gap growing or getting smaller?   Here is the data used for both charts.  The above chart used columns 2 to 7 below and the chart below used the final three columns.

Data used - DISD/Texas Student Achievement Gap by Ethnic/Racial Group 2005-2014
While the first chart above indicates progress, it is only dependent on the cross year reliability of the statewide tests.  The second chart below is a more reliable measure of progress with a more troubling message.  The minority gap is growing.  Dallas ISD has work to do and changes to make.  The past two years have not been good ones except for the 4.6% of DISD students who are White students disproportionately attending the magnet schools in DISD.