I have recently graduated from South Island School, after completing 2 years of the IB Diploma and am now awaiting for the final results.
Overall, the teaching quality is excellent at South Island School (SIS). SIS has recently implemented the Apple Laptop Scheme whereby all students at SIS will have a laptop to aid their learning. Whether students actually use their laptops to play games in the classroom is another issue despite there being sufficient restrictions on various websites. However ultimately it is down to the individual student themselves and their level of maturity. From my experience, laptops have been an amazing aid to my learning - something that I would recommend earnestly.
The learning atmosphere at South Island is extremely helpful with private study areas at various locations around school including a dedicated section to senior students in the library and the IB (International Baccalaureate) Centre which only senior students can use.
Furthermore, the School is well equipped with a careers centre for researching further education after South Island.
georookie has replied with a fairly extensive description of the IB Diploma program which I fully endorse.
There is a lot going around South Island that I'm sure your child will be interested to join. For example, 2 years ago an 'Innovation' Charity Fashion Show has been started to raise money for ORBIS and a 'Director's Cut' Media Showcase/Competition has been started too (which I personally founded and chaired).
Concerning partying, not dissimilar to the laptop scheme, it is down to the individual student themselves. There are people who, like in every school, party around but there are also kids who do seriously study and work hard. Overall, partying is not a big issue at South Island.
About the bullying in school, South Island has had several incidents with bullying and cyberbullying in both the Senior section and Lower Sections of the school but in all cases, teachers have intervened and appropriate sanctions have been made.
Overall, there is nothing to be worried about as South Island does have the appropriate resources to deal with any problems should they arise. Furthermore, all teachers at SIS are extremely approachable and be more than willing to help.
Please feel free to post any further questions and I'll be more than happy to answer them.