This may be old news, but the reliever school for Tanglewood, along with improvements to Tanglewood Elementary itself, is included in the FWISD bond election to take place this November. It also includes land purchases for future schools (one of which is what I assume to be for the Tanglewood reliever school), but nothing has yet been determined for where the reliever school will be located.
I'm hoping that the owners of the Edwards homestead would be willing to sell a portion of their property for the new school, or that it could be incorporated into future phases of Riverhills located north of Arborlawn Drive (preferably the portion north of Arborlawn/Bellaire east of the Chisholm Trail Parkway). That said, I heard that Riverhills was out of the question.
Sooner than later FWISD will have to consider the effects of all this growth on McLean and Paschal. While not affecting the Tanglewood area, ultimately FWISD will need to factor in the effects of suburban sprawl on the southwestern portions of their district, including the areas south and west of Benbrook as well as potential infill development between Walsh Ranch and 820. Also at full buildout the portions of Walsh within Tarrant County will be in the FWISD, rather than the Aledo ISD, and the Walsh master plan has schools included in the FWISD area. Furthermore, I've already heard of issues with overcrowding at the new Westpark Elementary in Benbrook, as well as crowding issues at the Benbrook Middle-High School, which was also recently expanded to include the old Westpark building. In my opinion the 2017 bond should have addressed these issues better (it does mention some improvements for Paschal, BMHS, and Waverly Park Elementary, though).
In my opinion the FWISD needs to look at how the suburban school districts (eg. Northwest ISD, Aledo ISD, Crowley ISD, etc.) handle growth in their school districts, including how they collaborate with developers to offer "on-site" schools. While most of the FWISD area is urban, there are also suburban and rural portions (especially around Benbrook) where there is the potential for major suburban sprawl in the years to come, not even mentioning growing areas like Tanglewood elsewhere in the district. Although I am not a fan of suburban sprawl, as long as there is a demand for it, the necessary planning needs to be done.