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Letter
Dear Sir or Madam,
My son, (name of your son) will be joining the summer course in (name of the institution) in this June (or other month during summer)
this letter is to notify that I now authorise (if amercian english "authorize") XXXX as the guardian (note this is the right spelling) of my son, and his (or her) contact details will be shown below:
name of the guardian: XXXXXXXXXXXX
address: XXXXXXXXXXXXXXXXXXXX
contact numbers: XXXXXXXXXXXXXXX
Thank you for your attention.
Regards,
(leave 6 rows here and sign your name here as well)
Your name
(Parent to 'your child name)