How to Use "enroll" with Example Sentences

1. All of these schools want you to enroll with them .
2. I 'm here to enroll my son ......
3. This means that cancer-fighting vaccines are only available to those who enroll in clinical trials .
4. I hadn 't come there to enroll , but their reactions piqued my interest .
5. They will be given public funds based on how many pupils enroll , with those from poor families attracting a premium .