My only concern for you is the student culture on your child and how he/she will react to this culture.
I'm a teacher that has taught at a wide range of schools (60% Free/Reduced lunches; 50% ESL to 2% F/R lunch; 0% ESL).
The only color that matters with student achievement in my limited experience is green. Middle class/rich parents and kids are fairly interchangeable and poor kids likewise have similar values as it pertains to school.
Racism absolutely still exists, but as far as achievement goes rich black, brown and white students act universally at school whereas poor students, by and large, also have similar behaviors at school.
Some of the brightest minds I taught were at the "worst" performing school I worked at, but because it wasn't cool/socially acceptable to work hard, obey the teacher, much less go to college. Students generally underperformed. (I have two interesting examples below.)
The two "high" performing schools I teach/taught at have just as many average/below average kids and yet they perform much better because the expectations at home and school culture is to succeed, work hard, pay attention, study, come in for extra assistance and college is absolutely expected (99% of our graduates attend 4 or 2 yr colleges).
Your child should be fine at this lower performing school (or any school outside of the absolute worse inner city schools), but if your child caves to peer pressure (and what child doesn't to some extent?), you'll have to work harder to ensure they are doing the things they are supposed to be doing or have consequences from you.
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Interesting Student interactions at the low performing school
Example #1
The brightest kid I taught at that school was in a gang. Would only show up once every 15 days to avoid truancy and would knock out 2 weeks of work for me in one 90-minute block with just the book and the worksheets. He would work quietly and every once in awhile raise his hand to ask questions.
I talked to him twice about how intelligent and awesome I thought he was, and he politely laughed both times and said school/college wasn't for him
Example #2
One of the brightest girls I taught and I had a conversation. I asked her about her plans after high school. What college or trade she was interested in given her intelligence and generally liking school. Her response, "I'm not going to college. No one in my family has even gone to college."
Me, "You would do well there, but if not what's your goal?"
Her, "Have a baby by 20?"
Me, "That's young and why 20?"
Her, "My mom had me at 18. I figured being 20 I'll have a better live than her."
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If either of these kids were born into families that valued education, they'd both have gone to college. Since their home structure sucked and education wasn't valued they most likely didn't.