How to make a custom user account without using email or phone number in firebase android

Question

Let's say I want to make a school app. The school has 100 students. And now I want to make an account for each student (100 accounts) using id as username and a custom password. Students can't change the password, it's static. Should I use the Firebase Authentication? If so, how can I do that? This is the json example:

{
  "users": {
    "246001": {
      "id": "246001",
      "name": "Anam Stanley",
      "password": "111"
    },
    "246002": {
      "id": "246002",
      "name": "Bella Preston",
      "password": "112"
    },
    "246003": {
      "id": "246003",
      "name": "Killian Serrano",
      "password": "113"
    },
    "246004": {
      "id": "246004",
      "name": "Madelaine Dickinson",
      "password": "114"
    },
    "246005": {
      "id": "246005",
      "name": "Maximus Ramirez",
      "password": "115"
    }
  }
}

Answer 1

If you want to manage users creation (or import) you need to use Firebase Admin SDK