Yes It is true that she is 12th Grade
Sonam Kapoor is an Indian actress who appears in Bollywood films and is one of highest-paid actresses in the industry and ranked as one of the most fashionable celebrities in India. She has been nominated for four Filmfare Awards.
The daughter of actor Anil Kapoor, Kapoor studied theater and arts at the United World College of South East Asia in Singapore.
Sonam said once these lines "My biggest regret is I've not completed my studies. But I'm going to finish my graduation this year. I'm going to fill in the forms to get my undergraduate degree in literature. For me, it's one of those things that I regret the most". So you can guess that she is still not a graduate.
Hopefully she will be very soon, amin :)