The hidden "under-achieving-status" of students transferring mid-year between publicly funded schools.

Most mid-year student transfers are from Charter to Public schools. DISD was going to do a profile study on the hundreds and thousands of students that they receive from Charter schools each year, but then DISD received a DISD Board President who also sits currently on a charter board (https://www.iltexas.org/board.)

That idea stopped and has never been made public again. Why? 

Data on transfers between publicly funded schools is hard to find. Here is a report on Washington DC from 2015 that is very similar to what I think Dallas County would look like: https://www.washingtonpost.com/local/education/thousands-move-in-and-out-of-schools-during-the-year-creating-disruptions/2015/07/04/43b63c02-14f9-11e5-89f3-61410da94eb1_story.html?utm_term=.51212dcc6104

I have been studying multiple TAPR (Texas Academic Progress Reports) on charter Districts and ISD's and began to notice missing information such as student transfer data that would allow academic achievement to be identified with the transfer students. This appears to be the most critical. I am building a spreadsheet comparing DISD with Dallas County Charter Districts. I am working to identify the most critical variables and welcome ideas.
Yes, DISD is looking good. Parents need to be studying TAPR reports on schools they are considering before they enroll or transfer their child.