Within Fort Worth ISD, there are several High Schools. Paschal seems to have the most National Merit Scholars, Tremble Tech has the highest rating according to TAKS scores (only exemplary high school I believe).
Arlington Heights (just off I-30, next to Central Market) has some good points. My best friend's son goes there. Several students go there that spent their middle school years at Private Schools. Other HS in south Fort Worth include Western Hills, Southwest, and South Hills.
School web pages, district info, etc. can be found at fortworthisd.org... there is no www. Then you can get data from an outside organization that rates the schools on test performance and best practices at just4kids.org... again, no www.
Mansfield is south of Fort Worth... it is growing quickly which can have it's good points (lots of new buildings) and bad points (general growing pains).
As far as commuting... yes, a lot of people in this area do. But it has it's drawbacks, too. I'm finishing up 6 years in Fort Worth ISD (at a feeder middle school for Arlington Heights) and trading it for a job in Granbury where I live. My commute has been 32 miles each way... over 68,400 miles with total drive time of 72 DAYS at 24-hours per day drive. I'm taking a pay cut... but with my new school 3/10 mile from home, I'll make it up with the cost of gasoline.
Anyway, back to your question. Honestly, in the Fort Worth area, there is no one "OMG, you MUST go to THIS school" campus. Most all of them have excellent points and highly successful students... the effort students put into school can be the biggest factor in their success. Check out the schools as much as you can online, find one with the features your children need (high test scores, winning baseball program, orchestra, demographics... whatever). The just4kids.org website has all of the demographic data... fortworthisd.org has the run-down on special programs and extracurricular stuff.
By the way, Fort Worth's Superintendent is still in her first year... and she's making a lot of changes... especially in high schools.
Hope this helps...