Student visa:

You can apply for a Student visa to study in the UK if you're 16 or over and you: have been offered a place on a course by a licensed student sponsor. have enough money to support yourself and pay for your course - the amount will vary depending on your circumstances.

Dependant Visa:

Your partner and children (‘dependants’) may be able to apply to come to the UK or stay longer in the UK

Click here for more info