For a Parent of a Tier 4 Child Visa you should demonstrate that you:
Your child must also:
Conditions of your Stay
As part of your conditions of staying in the UK, you must:
Leave in this category may be granted for up to 12 months at a time until your child reaches the age of 12. You will be given a shorter visa and will not be able to extend your stay if your child is going to have their 12th birthday in the next 12 months or finish their final year at school in the next 12 months.
Work and study in the United Kingdom are prohibited.
When you are in the UK and wish to renew this visa, the application usually takes around 8 weeks for a decision.
But if you apply through the same day visa service, a decision is normally made the same day. If your documents need investigating, you need to be interviewed or you have a criminal record then a decision may be delayed.
Once you have applied you can stay in the UK until you have been given a decision, as long as you applied before your last visa expired.