K.P.
Broward County is huge and each "zone" is different. My sister teachers in Broward and my BIL teaches at a private school in Broward- same school we all attended.
I would suggest that you move East of Hallandale- b/w 95 and US1 or A1A... if you can, North of Broward Blvd, but South of Atlantic. The schools in Fort Lauderdale tend to have better ratings.
Honestly, the public schools in South FL are highly inconsistent and are undergoing significant budget issues (like everyone else). You may have better luck with a private or parochial school if you are unable to actually move to a different location. In Hallandale, you have several options if you are able to spend the $$ for private education.