First, it takes tuition to learn dj or MC to shout wheat. Don't trust those who study for free and get paid.
Second, it only takes a few days or a month to learn to play dj or shout wheat. Generally, it takes about two months to learn a dj to play discs for two hours a day.
Third, no matter which individual or school, you can guarantee employment after studying (because what you do depends on your technical ability, image, etc. ), so don't listen to 100% job guarantee.
Fourth, no school or individual has a dj certificate (because dj is not in the professional scope).
The above four points are for your reference.