Hey!! Hope you’re safe and well!
It depends on what age the kid is. If he/she is way over the admission age it’s very unlikely for schools to admit him/her. Although you can request by writing a letter to the authorities stating the reasons for the Drop out. They’ll maybe conduct a written test and if they are satisfied, they’ll count him/her in.
The above explanation is for private schools. Government schools are very likely to admit the kid once you state what’s the problem
Hope you find what you’re looking for!