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Both Hackbright Academy and Grace Hopper Academy are great schools. But to answer this question well, I think I need a bit more information. Choosing a programming school is a big step in becoming a software engineer, and I recommend you don't take this decision lightly.
There are a few things you might want to think about to help you make your big decision.
1) Cost. Education is not cheap these days, but you will find a variety of price ranges out there. Don't take the price at face value. Some of the more expensive schools are worth the money, and some of the more affordable options may not offer the quality education for which you are looking.
2) Location. You want to go to a school in the area in which you want to work. Hopefully, if the school is doing a good job, they are also helping you network. Your personal network and that of the school's will prove to be extremely valuable when it comes time to look for a job.
3) Duration. How long are you willing to commit to your future? Maybe you have just a few months... in that case, a short three-month bootcamp might be the perfect fit. If you have the ability to spend some more time on your education, I would suggest a program similar to the one I did in San Francisco, Holberton. This program is two-years long, and thus can afford the students to go deeper in the fundamentals and foundations of software engineering.